Physiologia plantarum最新文献_第2页

Does succulence in woody plants delay desiccation, and is stored water used to maintain physiological function during drought conditions? 木本植物的肉质化是否会延迟干燥，储存的水分是否用于在干旱条件下维持生理功能？

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14616

Bihan Guo, Stefan K Arndt, Rebecca E Miller, Christopher Szota, Claire Farrell

{"title":"Does succulence in woody plants delay desiccation, and is stored water used to maintain physiological function during drought conditions?","authors":"Bihan Guo, Stefan K Arndt, Rebecca E Miller, Christopher Szota, Claire Farrell","doi":"10.1111/ppl.14616","DOIUrl":"https://doi.org/10.1111/ppl.14616","url":null,"abstract":"Succulence is a trait that describes water storage in plant organs and tissues regardless of life form. Plants use the stored water to maintain physiological function and delay desiccation. However, it is unclear whether succulence in leaves, stems and roots of woody plants delays desiccation, whether it provides 'utilizable water' to maintain physiological function, or buffers changes in water status in drying soils through capacitance. We conducted a pot dry-down experiment with nine shrub species to determine whether woody plants with greater leaf, stem, or root succulence have greater shoot utilizable water or capacitance. We also investigated whether greater succulence delays desiccation, represented by cumulative VPD, until evapotranspiration ceased or until utilizable water was exhausted. Greater leaf and stem succulence were strongly related to greater shoot utilizable water and capacitance. However, desiccation time was not delayed in plants with greater total shoot succulence, utilizable water, or capacitance. Instead, woody plants with greater root succulence had longer desiccation times. This suggests that woody plants use aboveground succulence to maintain physiological function and water status during drought, whereas root succulence extends desiccation time. Our study improves the mechanistic understanding of how woody plants use stored water to survive in dryland ecosystems.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14616"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Linking stomatal size and density to water use efficiency and leaf carbon isotope ratio in juvenile and mature trees. 将幼树和成年树的气孔大小和密度与水分利用效率和叶碳同位素比率联系起来。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14619

Peter Petrík, Anja Petek-Petrík, Laurent J Lamarque, Roman M Link, Pierre-André Waite, Nadine K Ruehr, Bernhard Schuldt, Vincent Maire

{"title":"Linking stomatal size and density to water use efficiency and leaf carbon isotope ratio in juvenile and mature trees.","authors":"Peter Petrík, Anja Petek-Petrík, Laurent J Lamarque, Roman M Link, Pierre-André Waite, Nadine K Ruehr, Bernhard Schuldt, Vincent Maire","doi":"10.1111/ppl.14619","DOIUrl":"https://doi.org/10.1111/ppl.14619","url":null,"abstract":"Water-use efficiency (WUE) is affected by multiple leaf traits, including stomatal morphology. However, the impact of stomatal morphology on WUE across different ontogenetic stages of tree species is not well-documented. Here, we investigated the relationship between stomatal morphology, intrinsic water-use efficiency (iWUE) and leaf carbon isotope ratio (δ13C). We sampled 190 individuals, including juvenile and mature trees belonging to 18 temperate broadleaved tree species and 9 genera. We measured guard cell length (GCL), stomatal density (SD), specific leaf area (SLA), iWUE and bulk leaf δ13C as a proxy for long-term WUE. Leaf δ13C correlated positively with iWUE across species in both juvenile and mature trees, while GCL showed a negative and SD a positive effect on iWUE and leaf δ13C. Within species, however, only GCL was significantly associated with iWUE and leaf δ13C. SLA had a minor negative influence on iWUE and leaf δ13C, but this effect was inconsistent between juvenile and mature trees. We conclude that GCL and SD can be considered functional morphological traits related to the iWUE and leaf δ13C of trees, highlighting their potential for rapid phenotyping approaches in ecological studies.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14619"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Innovative Approach: Alleviating Cadmium Toxicity in Grapevine Seedlings Using Smoke Solution Derived from the Burning of Vineyard Pruning Waste. 创新方法：利用葡萄园修剪废料焚烧产生的烟雾溶液减轻葡萄幼苗的镉毒性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14624

Adem Yağcı, Selda Daler, Ozkan Kaya

{"title":"An Innovative Approach: Alleviating Cadmium Toxicity in Grapevine Seedlings Using Smoke Solution Derived from the Burning of Vineyard Pruning Waste.","authors":"Adem Yağcı, Selda Daler, Ozkan Kaya","doi":"10.1111/ppl.14624","DOIUrl":"https://doi.org/10.1111/ppl.14624","url":null,"abstract":"Although plant-derived smoke solutions (SSs) have exhibited growth-promoting properties in various plant species, their potential role in mitigating heavy metal stress, specifically in grapevines, has remained unexplored and unreported. This knowledge gap prompted the present study to evaluate the efficacy of foliar application of SSs derived from vineyard pruning waste at concentrations of 0%, 0.5%, 1%, and 2% in mitigating Cadmium (Cd) phytotoxicity in grape saplings. In our study, cadmium stress was induced by applying 10 mg/kg CdCl2 to the root area of the saplings, in conjunction with fertilizers. Our findings showed that exposure to Cd toxicity impeded the growth of grapevine saplings, adversely affecting shoot and root length, as well as fresh weight. Furthermore, it resulted in a reduction in chlorophyll content, stomatal conductance, and leaf water content while significantly increasing membrane damage and lipid peroxidation. Notably, the application of 0.5% SS enhanced grapevine sapling growth and alleviated Cd stress-induced damage by more effectively regulating physiological and biochemical responses compared to the control and other concentrations. Based on our results, under Cd stress conditions, the application of 0.5% SS effectively increased chlorophyll content, relative water content (RWC), stomatal conductance (1.79 mmol.m-2.sn-1), and total phenolic content (1.89 mg.g-1), whereas it significantly reduced malondialdehyde (MDA) levels and membrane damage (1.35 nmol.g-1). Additionally, it significantly elevated the activities of antioxidant enzymes, including superoxide dismutase (SOD) (2.16 U.mg-1), catalase (CAT) (1.55 U.mg-1), and ascorbate peroxidase (APX) (3.03 U.mg-1). The study demonstrated that plant-derived SS mitigates Cd stress in grapevines by enhancing antioxidative defence mechanisms.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14624"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142626167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A QTL on chromosome 17 identified by Genome-Wide Association Mapping controls postharvest cold tolerance of Cucurbita pepo L. 通过全基因组关联图谱确定的第 17 号染色体上的一个 QTL 控制着葫芦 L. 的采后耐寒性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14602

Alicia García, Alejandro Castro-Cegrí, Alba López, María Segura, Álvaro Benítez, Dolores Garrido, Francisco Palma, Cecilia Martínez, Manuel Jamilena

{"title":"A QTL on chromosome 17 identified by Genome-Wide Association Mapping controls postharvest cold tolerance of Cucurbita pepo L.","authors":"Alicia García, Alejandro Castro-Cegrí, Alba López, María Segura, Álvaro Benítez, Dolores Garrido, Francisco Palma, Cecilia Martínez, Manuel Jamilena","doi":"10.1111/ppl.14602","DOIUrl":"https://doi.org/10.1111/ppl.14602","url":null,"abstract":"The worldwide cultivated Cucurbita pepo L. is one of the most diverse species in the plant kingdom. In this study, chilling tolerance over a wide range of cultivars was characterized to discover the allelic variants to improving the postharvest quality of the immature fruit during cold storage. For this purpose, fruits from 126 accessions of worldwide origin have been evaluated for weight loss and chilling injury after 3, 7 and 14 days of cold storage, classifying them into tolerant, partially tolerant, and sensitive accessions. To verify this classification, antioxidant capacity and lipid peroxidation (MDA) of contrasting accessions (tolerant vs. sensitive) were assessed. The antioxidant capacity significantly decreased during cold storage in the sensitive accessions, while it was maintained in tolerant accessions. Additionally, the sensitive accessions presented a higher accumulation of MDA during this period. Finally, a GWAS analysis using GBS data available in CuGenDBv2, combined with weight loss percentage data, led to the identification of a candidate QTL located on chromosome 17 that regulates postharvest cold tolerance in zucchini. The region contains four SNPs whose alternative alleles were significantly associated with lower weight loss percentage and chilling injury indices during cold storage. Two SNPs are located in the 3' UTR region of the gene CpERS1, a gene involved in ethylene perception. The other two SNPs generate missense mutations in the coding region of a Pectin methyl esterase inhibitor gene (CpPMI). The role of this QTL and these variants in chilling tolerance is discussed.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14602"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142569390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meta-analysis of SnRK2 gene overexpression in response to drought and salt stress. 针对干旱和盐胁迫的 SnRK2 基因过表达的元分析。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14578

Haixun Liu, Xian Wang, Xiaolin Zhu, Dongfang Zhang, Yizhen Wang, Tianjie Wang, Lifei Chen, Baoqiang Wang, Xiaohong Wei

{"title":"Meta-analysis of SnRK2 gene overexpression in response to drought and salt stress.","authors":"Haixun Liu, Xian Wang, Xiaolin Zhu, Dongfang Zhang, Yizhen Wang, Tianjie Wang, Lifei Chen, Baoqiang Wang, Xiaohong Wei","doi":"10.1111/ppl.14578","DOIUrl":"10.1111/ppl.14578","url":null,"abstract":"SNF1-RELATED KINASE 2 (SnRK2) plays a crucial role in plants' stress response. Although studies have reported that the overexpression of several SnRK2 family members in different plants leads to improved stress tolerance, it is difficult to elucidate the mechanisms by which SnRK2s regulate stress tolerance due to the variability of experimental variables in these studies. Therefore, we used meta-analysis to comprehensively analyze 22 parameters that can reflect drought tolerance and salinity tolerance in SnRK2s-transformed plants and to explore the effects that different experimental variables between studies have on the relevant plant parameters. The results showed that the overexpression of SnRK2s mainly improved plants' drought and salinity tolerance by reducing their osmotic stress and oxidative damage, improving photosynthesis and other biochemical and physiological processes. Out of the 22 physiological parameters, 17 and 19 were significantly affected by drought and salt stress, respectively, and 10 indicators were also significantly changed under non-stress conditions. Under salt stress, the cell membrane permeability among these parameters shows the most significant changes, increasing by 506.57% in SnRK2-overexpressing plants compared to wild type (WT). Therefore, although plants overexpressing SnRK2s respond positively to both drought and salt stress, they demonstrated greater tolerance to salt stress. In addition, among the detected regulatory variables, donor-acceptor type, promoter type, stress type, experimental medium, and duration all affected the extent of SnRK2s overexpression and affected the physiological characteristics of the transgenic plants. Also, different stress conditions (salt, drought stress) led to different degrees of transformation. These studies provide new research directions for studying crop stress tolerance and help to better explore the functions played by SnRK2s in external plant stresses.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14578"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142522667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interplay between CO₂ and light governs carbon partitioning in Chlamydomonas reinhardtii. 二氧化碳和光照之间的相互作用制约着衣藻的碳分配。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14630

Luca Zuliani, Michela Cecchin, Tea Miotti, Matteo Paloschi, Stephan Cuine, Stefano Cazzaniga, Yonghua Li-Beisson, Matteo Ballottari

{"title":"Interplay between CO2 and light governs carbon partitioning in Chlamydomonas reinhardtii.","authors":"Luca Zuliani, Michela Cecchin, Tea Miotti, Matteo Paloschi, Stephan Cuine, Stefano Cazzaniga, Yonghua Li-Beisson, Matteo Ballottari","doi":"10.1111/ppl.14630","DOIUrl":"https://doi.org/10.1111/ppl.14630","url":null,"abstract":"Increasing CO2 availability is a common practice at the industrial level to trigger biomass productivity in microalgae cultures. Still, the consequences of high CO2 availability in microalgal cells exposed to relatively high light require further investigation. Here, the photosynthetic, physiologic, and metabolic responses of the green microalga model Chlamydomonas reinhardtii were investigated in high or low CO2 availability conditions: high CO2 enabled higher biomass yields only if sufficient light energy was provided. Moreover, cells grown in high light and high CO2 availability were characterized, compared to cells grown in high light and low CO2, by a relative increase of the energy-dense triacylglycerols and decreased starch accumulation per dry weight. The photosynthetic machinery adapted to the increased carbon availability, modulating Photosystem II light-harvesting efficiency and increasing Photosystem I photochemical activity, which shifted from being acceptor side to donor side limited: cells grown at high CO2 availability were characterized by increased photosynthetic linear electron flow and by the onset of a balance between NAD(P)H oxidation and NAD(P)+ reduction. Mitochondrial respiration was also influenced by the conditions herein applied, with reduced respiration through the cytochrome pathway compensated by increased respiration through alternative pathways, demonstrating a different use of the cellular reducing power based on carbon availability. The results suggest that at high CO2 availability and high irradiance, the reducing power generated by the oxidative metabolism of photosynthates is either dissipated through alternative oxidative pathways in the mitochondria or translocated back to the chloroplasts to support carbon assimilation and energy-rich lipids accumulation.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14630"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PhAN2 regulated Ph3GT silencing changes the flower color and anthocyanin content in petunias. PhAN2 调控的 Ph3GT 沉默改变了矮牵牛花的花色和花青素含量。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14633

Wenjie Yang, Yi Yao, Wenqi Deng, Xin Li, Jiahao Cao, Jieni Li, Weiyuan Yang, Yixun Yu, Juanxu Liu

{"title":"PhAN2 regulated Ph3GT silencing changes the flower color and anthocyanin content in petunias.","authors":"Wenjie Yang, Yi Yao, Wenqi Deng, Xin Li, Jiahao Cao, Jieni Li, Weiyuan Yang, Yixun Yu, Juanxu Liu","doi":"10.1111/ppl.14633","DOIUrl":"https://doi.org/10.1111/ppl.14633","url":null,"abstract":"Anthocyanins are important secondary metabolites in plants. After the formation of anthocyanidins, Flavonoid 3-O-glucosyltransferase (3GT) mediated glycosylation first occurs at the C-3 site, forming a stable anthocyanin 3-O-glucoside. Several studies have investigated the function of 3GT using biochemical methods. However, it is necessary to provide further genetic evidence for the role of Ph3GT in petunia (Petunia hybrida). In addition, there is no information regarding the subcellular localization of Ph3GT and the regulation of transcription factors on Ph3GT. In this study, the full-length Ph3GT gene from petunia (Petunia hybrida) was isolated. We found that Ph3GT is localized in the cytoplasm. Ph3GT exhibited high expression levels in the corollas during the coloring period of petunia flowers. VIGS-mediated Ph3GT silencing resulted in a lighter corolla color and a significant decrease in the anthocyanin content in six petunia cultivars. The silencing of Ph3GT affected the expression levels of eight key genes in the anthocyanin synthesis pathway. Additionally, dual luciferase and yeast one-hybrid assays showed that R2R3-MYB transcription factor PhAN2 directly regulates the transcript of Ph3GT.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14633"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142716899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phosphorus addition severely exacerbates the inhibitory effect of the increased diurnal temperature range on the invasive plant Solidago canadensis. 磷的添加严重加剧了昼夜温差增大对入侵植物实心草（Solidago canadensis）的抑制作用。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14634

Miaomiao Cui, Bin Yang, Jie Dong, Xue Fan, Haochen Yu, Guangqian Ren, Zhaoqi Zhu, Daolin Du

{"title":"Phosphorus addition severely exacerbates the inhibitory effect of the increased diurnal temperature range on the invasive plant Solidago canadensis.","authors":"Miaomiao Cui, Bin Yang, Jie Dong, Xue Fan, Haochen Yu, Guangqian Ren, Zhaoqi Zhu, Daolin Du","doi":"10.1111/ppl.14634","DOIUrl":"https://doi.org/10.1111/ppl.14634","url":null,"abstract":"This study investigates how variations in diurnal temperature and phosphorus concentration affect the growth of native Artemisia argyi and invasive Solidago canadensis under intraspecific and interspecific competition. We conducted factorial experiments to assess the impacts of warming, including an increased diurnal temperature range (DTRinc), a symmetric increase in diurnal temperature range (DTRsys), a decreased diurnal temperature range (DTRdec) and phosphorus application (5 g and 10 g P m2 yr-1) on both intra- and inter-specific competition among plants. The results indicated that (1) the DTRsys for A. argyi was -48.95% and for S. canadensis, it was -31.49% and overall had a more pronounced inhibitory effect on the biomass of both plant species than other warming treatments after comprehensive analysis. (2) Under intraspecific competition, phosphorus promoted the growth of A. argyi and S. canadensis on plant height, root length, and biomass. The biomass of A. argyi (22.75% and 53.61%) and S. canadensis (11.49% and 27.76%) increased under low and high phosphorus, respectively. Under interspecific competition, the plant height and biomass of the two plant species showed different response trends to phosphorus. Still, the competitiveness of S. canadensis increased compared with the untreated group. (3) Plant adaptability in biomass was more sensitive to warming than phosphorus treatments, and warming reduced the promoting effect of phosphorus, indicating that warming and phosphorus have interactive effects on plants. Phosphorus exacerbated the inhibitory effect of DTRinc on the biomass of S. canadensis, which was more pronounced than other warming methods. The different responses of the two plants mention the species to warming and phosphorus treatments under different competition scenarios reflect the differences in their ecological strategies for adapting to the environment.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14634"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142716901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biogenic silver nanoparticles derived from the marine brown algae Iyengaria stellata for plant growth promotion under saline conditions. 从海洋褐藻 Iyengaria stellata 中提取的生物银纳米粒子在盐碱条件下促进植物生长。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14638

Disha Patel, Bhakti Patel, Anil Patani, Virendra Kumar Yadav, Sulaiman Ali Alharbi, Abdullah A Alarfaj, Nisha Choudhary, Ashish Patel

{"title":"Biogenic silver nanoparticles derived from the marine brown algae Iyengaria stellata for plant growth promotion under saline conditions.","authors":"Disha Patel, Bhakti Patel, Anil Patani, Virendra Kumar Yadav, Sulaiman Ali Alharbi, Abdullah A Alarfaj, Nisha Choudhary, Ashish Patel","doi":"10.1111/ppl.14638","DOIUrl":"https://doi.org/10.1111/ppl.14638","url":null,"abstract":"In the green approach for nanoparticle synthesis, biomolecules like phenols, alkaloids, proteins, enzymes, and lipids are the prime reducing and stabilizing agents. In this study, we reported the synthesis of silver nanoparticles (AgNPs) using the aqueous extract of the marine algae Iyengaria stellata (Børgesen) for the first time. The characterization study showed that the developed AgNPs were spherical in shape and their average particle size was 60 nm. The UV-visible spectrum of AgNPs showed strong surface plasmon resonance (SPR) near 425 nm, whereas the Fourier transform infrared spectroscopy (FTIR) spectrum revealed the presence of several functional groups like amines, nitriles, hydroxyl, and carbonyl groups on the nanoparticle surface, which confirms the involvement of algal metabolites in the reduction and stabilization of AgNPs. The X-ray diffraction (XRD) analysis provided information about the crystallinity of developed nanoparticles, and the crystallite size of AgNPs was calculated to be 33 nm using the Scherrer equation. The algal synthesized AgNPs examined for their impact on growth of tomato seeds under salt stressed conditions showed significant enhancement in growth parameters like leaf area, shoot height, root length, shoot weight, and root weight. Also, a reduction in biochemical stress responses such as chlorophyll content, relative water content, electrolyte leakage, hydrogen peroxide (H2O2) content, glycine betaine content, and proline content was seen. This study suggests that algal synthesized AgNPs can reduce the effect of salt stress in tomato plants and promote their overall growth.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14638"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

TaCCS1-B expression modulates copper, enzymatic antioxidants and polyphenols contents and provides abiotic stress tolerance in transgenic Arabidopsis.

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2024-11-01 DOI: 10.1111/ppl.14645

Shivi Tyagi, Shumayla, Samar Singh, Ashutosh Pandey, Santosh Kumar Upadhyay

{"title":"TaCCS1-B expression modulates copper, enzymatic antioxidants and polyphenols contents and provides abiotic stress tolerance in transgenic Arabidopsis.","authors":"Shivi Tyagi, Shumayla, Samar Singh, Ashutosh Pandey, Santosh Kumar Upadhyay","doi":"10.1111/ppl.14645","DOIUrl":"https://doi.org/10.1111/ppl.14645","url":null,"abstract":"Abiotic stress, including osmotic and salinity stress, significantly affects plant growth and productivity. Copper chaperone for superoxide dismutase (CCS) is essential for copper homeostasis and oxidative stress management. In this study, we investigated the role of the TaCCS1-B gene of bread wheat in enhancing stress tolerance in yeast and transgenic Arabidopsis. Expression of TaCCS1-B increased abiotic stress tolerance in recombinant yeast cells. Phenotypic analysis of Arabidopsis TaCCS1-B expressing lines demonstrated that they exhibited significantly higher germination rates, increased root length and better growth under osmotic and salinity stress than wild type. Additionally, the transgenic lines exhibited higher copper accumulation and enhanced photosynthetic pigments and proline level, coupled with reduced hydrogen peroxide (H₂O₂) and malondialdehyde (MDA) contents. They also showed higher enzymatic antioxidants' activities, indicating reduced oxidative stress in transgenic lines, resulting in reduced flavonoid content. Gene expression analysis indicated modulated expression of stress-responsive genes in the transgenic lines under stress conditions. These findings suggested the role of TaCCS1-B in enhancing stress tolerance by improving copper homeostasis and regulating key stress-responsive genes. This study highlights the potential of TaCCS1-B for the development of better stress resilience crops, which is critical for sustaining agricultural productivity for food security under adverse environmental conditions.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"176 6","pages":"e14645"},"PeriodicalIF":5.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142750639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0