Acta Physiologiae Plantarum最新文献

{"title":"Effects of water stress on chlorophyll fluorescence and growth of Rorippa amphibia: a well-adjusted invasive plant in China","authors":"Kaihua Zhou,&nbsp;Suolong Wu,&nbsp;Jiehan Ke,&nbsp;Jiaxiao Wang,&nbsp;Yan Wang","doi":"10.1007/s11738-024-03722-z","DOIUrl":"10.1007/s11738-024-03722-z","url":null,"abstract":"<div><p>Studying photosynthetic and growth-related characteristics of invasive plants under water stress is an important way to reveal their biological invasiveness. <i>Rorippa amphibia</i> native to Europe has invaded extensively the Liaoning Province, China, in recent years. <i>Rorippa amphibia</i> was cultured under waterlogging (flooded 2 cm over the soil surface), wet (25 ~ 30%, which means the soil water content corresponding to this treatment is 25 ~ 30% and the same goes for the following), CK (15 ~ 20%), or drought (5 ~ 10%) conditions in Shenyang for 1 month. Afterward, the chlorophyll fluorescence and growth indexes were measured. The results showed that in drought treatment, the V_J, V_K, M₀, Sm, φDo and DI₀/RC were significantly higher than CK, while Fm, Fv/Fo, Ψo, φPo and PI_ABS declined significantly. In waterlogging treatment, only V_J increased significantly and Fm, Ψo, φEo, ET₀/RC and PI_ABS decreased significantly. However, no significant difference between wet treatment and CK was found in chlorophyll fluorescence. Waterlogging, wet and CK treatments were conducive to <i>Rorippa amphibia</i> growth, while drought treatment harmed its growth. But some growth indexes including total leaf number and fresh and dry weight per leaf were higher than CK and root length, and fresh and dry weight of underground part and root-weight ratio increased with the decrease of soil water gradients. <i>Rorippa amphibia</i> showed a good performance under waterlogging and wet conditions, and it could also adapt to drought stress by adjustment of biomass allocation between the aboveground and underground parts. This may be the mechanism by which <i>Rorippa amphibia</i> successfully invades different habitats.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transcriptome analysis of color-related gene expression in three differently colored cherry tomato fruits","authors":"Jian Zhang,&nbsp;Zhen Tao,&nbsp;Rui Xia","doi":"10.1007/s11738-024-03732-x","DOIUrl":"10.1007/s11738-024-03732-x","url":null,"abstract":"<div><p>Tomato (<i>Lycopersicon esculentum</i> Mill.) is a globally important fruit. However, the gene expression in differently colored cherry tomato fruits is not well understood. In this study, three typical cherry tomato fruit colors (yellow, green, and red) were selected to explore genes related to color transformation through transcriptome analysis. The results showed that the soluble solid content was highest in the yellow fruits (5.5%), followed by the green and red fruits at 4.9 and 4.5%, respectively. A total of 1547 genes were upregulated and 2752 genes were downregulated in the yellow fruits compared with the green fruits; further, 913 genes were upregulated and 1863 genes were downregulated in the yellow fruits compared with the red fruits. The most upregulated pathways obtained through Kyoto Encyclopedia of Genes and Genomes analysis included photosynthesis, glutathione metabolism, and flavonoid biosynthesis in the yellow fruits compared with the red fruits. Our observations suggest that the three cherry tomato fruits utilize different pathways in color determination. The genes <i>LOC101257857</i> and <i>LOC101253805</i> were upregulated in the yellow fruits, while <i>LOC101246495</i>, <i>LOC101248036</i>, and <i>LOC101260960</i> were upregulated in the green fruits. This work contributes to the understanding of the gene expression and pathways in fruit color change, providing new insights into improving the quality of cherry tomato fruits.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hormonal, biochemical, and genetic regulations of walnut fruit development and ripening: an integrated perspective","authors":"Pankaj Kumar,&nbsp;Sidharth Sharma,&nbsp;Shagun Sharma,&nbsp;Pramod Verma,&nbsp;Mohammad Irfan","doi":"10.1007/s11738-024-03730-z","DOIUrl":"10.1007/s11738-024-03730-z","url":null,"abstract":"<div><p>Walnut (<i>Juglans </i>spp.) trees hold immense significance in both economic and ecological contexts within agri-horticultural ecosystems. The comprehension of the intricate mechanisms underpinning walnut growth and development stands as a pivotal endeavor, essential for advancing sustainable yield practices. This comprehensive review delves into the multifaceted factors that contribute to the growth and development of walnuts, encompassing hormonal, biochemical, and genetic dimensions. Notably, hormones such as gibberellic acids (GAs) and sugars assume pivotal roles in the initiation and maturation of walnut flowers, with specific investigations demonstrating that the application of GAs has the capacity to augment male flower counts. The levels of endogenous auxins and gibberellins exhibit variations across distinct phases of walnut development, with the highest concentrations observed in young tissues. The molecular underpinnings of walnut growth and development involve a complex interplay of genetic regulation, hormonal dynamics, and environmental factors. Distinct sets of genes exhibit activation at discrete developmental stages, thereby influencing fundamental processes such as cell division, differentiation, and food reserve metabolism. Several key regulatory genes, including <i>ACC, ASMT, SAD, FAD, SOC,</i> and <i>TFL1,</i> emerge as pivotal orchestrators, steering essential processes encompassing cell division, differentiation, flowering, and fruit development. Conclusively, this article provides a detailed exploration of the diverse aspects of walnut growth and development, from genetic regulation to hormonal and biochemical processes. This will provide a valuable resource for researchers, horticulturalists, and biotechnologists aiming to improve walnut productivity and resilience in the face of changing environmental conditions.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Untangling the influence of biotic and abiotic factors on the elevational variation of plant intrinsic water-use efficiency and nitrogen availability in an alpine-gorge region on the eastern Qinghai-Tibetan Plateau","authors":"Jian Chen,&nbsp;Miao Chen,&nbsp;Shun Liu,&nbsp;Hongshuang Xing,&nbsp;Feifan Li,&nbsp;Gexi Xu,&nbsp;Zuomin Shi","doi":"10.1007/s11738-024-03731-y","DOIUrl":"10.1007/s11738-024-03731-y","url":null,"abstract":"<div><p>Despite the sensitivity to climate change in the alpine-gorge region on the eastern Qinghai-Tibetan Plateau, comprehensive information on the elevational variation patterns of plant intrinsic water use efficiency (iWUE) and plant nitrogen (N) availability in this region is still lacking. To explore the elevational patterns and their drivers of plant iWUE (calculated from leaf δ¹³C) and plant N availability (assessed by leaf δ¹⁵N) of different plant growth forms, plant iWUE and leaf δ¹⁵N of 654 observed samples of 158 species from seven typical vegetation types distributed along the elevation were investigated, and the effects of taxonomic identity, leaf functional traits, soil and climatic factors on them were explored by linear mixed-effects model. It was found that both plant iWUE and leaf δ¹⁵N differed significantly among different plant growth forms, with plant iWUE showed shrubs &gt; herbs &gt; trees and leaf δ¹⁵N showed herbs &gt; shrubs &gt; trees. The plant iWUE and leaf δ¹⁵N showed a U-shaped pattern along elevation, and the elevation patterns of different plant growth forms were consistent. The plant iWUE of different growth forms first decreased and then increased with increasing humidity index, and the humidity index breakpoints of different plant growth forms were different. The leaf δ¹⁵N of herbs and shrubs showed a significantly positive correlation with humidity index, whereas the leaf δ¹⁵N of trees had an insignificant correlation with humidity index. The elevation variations of plant iWUE and leaf δ¹⁵N of different plant growth forms were jointly influenced by biotic (i.e., plant taxonomy and leaf functional traits) and abiotic (i.e., soil and climate) factors, but were mainly determined by biotic factors. Our results showed that the significant coupling between plant iWUE and leaf δ¹⁵N did not vary by plant growth forms, thereby suggesting a close link between carbon and N cycles. This study deepens our knowledge regarding elevation variations and their drivers of plant iWUE and leaf δ¹⁵N, and confirms the importance of biotic factors on plant iWUE and leaf δ¹⁵N variations along elevation gradients in the alpine-gorge region.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity evaluation and germplasm identification of Mesona chinensis Benth from plant morphology, cytology, and EST-SSR molecular markers","authors":"Suhua Huang,&nbsp;Xiaomei Wei,&nbsp;Changqian Quan,&nbsp;Meihua Xu,&nbsp;Zhining Chen,&nbsp;Fan Wei,&nbsp;Danfeng Tang","doi":"10.1007/s11738-024-03728-7","DOIUrl":"10.1007/s11738-024-03728-7","url":null,"abstract":"<div><p><i>Mesona chinensis</i> Benth (MCB), also known as <i>Platostoma palustre</i>, is a highly significant medicinal and edible plant in China and Southeast Asian countries. The cultivated seedlings of MCB are primarily local farm varieties propagated through cuttings, with many being domesticated from wild species. This has led to an unclear and mixed source, as well as uneven quality of MCB. Hence, it is imperative to collect, preserve, evaluate, and identify the germplasm resources of MCB. This study aimed to evaluate the genetic diversity and identify the germplasm of eight core MCB resources using morphology, cytology, and EST-SSR molecular markers. Morphological observations showed significant variation in the inflorescences, leaves, stems, and corolla tissues. Scanning electron microscope (SEM) observations demonstrated significant differences in the number of stomata between the abaxial and adaxial sides of leaves. Furthermore, out of 192 primer pairs of EST-SSR molecular markers, 9 were suitable for constructing fingerprints. A total of 31 alleles were detected, with an average of 3.444 alleles per locus. The number of effective alleles (Ne) of 9 EST-SSR loci ranged from 1.473 (TDF139) to 3.877 (TDF166), while the Shannon Information index (I) per locus ranged from 0.601 (TDF139) to 1.461 (TDF166). The average value of observed heterozygosity (Ho) was 0.681, while the expected heterozygosity (He) was 0.523. The mean value of fixation index (F) was -0.294, while the mean heterozygosity within populations (Hs) was 0.762. The polymorphism information content (PIC) ranged from 0.295 (TDF139) to 0.701 (TDF166) across the 9 loci, with an average PIC value of 0.466. These results indicated that the selected EST-SSR primers exhibited high levels of polymorphism. Notably, TDF166 played a prominent role in exploring the genetic diversity of MCB. Furthermore, the Nei’s genetic distance among the eight germplasm resources exhibited significant variation, resulting in the division of all germplasm resources into six subclades. This suggested the presence of abundant genetic diversity within the MCB germplasm resources used in this study. This study provided a foundation for the conservation, management, and future breeding of MCB germplasm resources.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of candidate proteins related to oleic acid accumulation during sunflower (Helianthus annuus L.) seed development through comparative proteome analysis","authors":"Fei Zhou,&nbsp;Yan Liu,&nbsp;Pengyuan Xie,&nbsp;Jun Ma,&nbsp;Jing Wang,&nbsp;Jing Sun,&nbsp;Xutang Huang,&nbsp;Wenjun Wang","doi":"10.1007/s11738-024-03736-7","DOIUrl":"10.1007/s11738-024-03736-7","url":null,"abstract":"<div><p>As a crucial oil crop, sunflower (<i>Helianthus annuus</i> L.) has a high content of unsaturated fatty acids (FAs). The unsaturated FAs found in sunflower oil mainly include oleic acid (OA, C18:1) and linoleic acid (LOA, C18:2). OA’s antioxidant activity makes sunflower oil with high health value and suitable for storage. However, molecular mechanisms underlying differences in OA accumulation between high- and low-oleate sunflower varieties in seed development remain unexplored. Here, to identify key OA synthesis-related proteins, isobaric tag for relative and absolute quantitation (iTRAQ) was performed. Ultimately, 592 differentially expressed proteins (DEPs) (233 upregulated, 359 downregulated) were identified between high-oleate (‘L-1-OL-1’) and low-oleate (‘86–1’) maintainer lines. KEGG enrichment analysis of DEPs identified biosynthesis of unsaturated FAs as the most highly enriched biological pathway. Subsequently, combined transcriptome and proteome analysis results suggested that several proteins in this pathway might influence final seed OA content, including FAD2 (Δ12 fatty acid desaturase). Notably, FAD2 expression was significantly downregulated in ‘L-1-OL-1’ versus ‘86–1’ seeds, with results aligning with <i>FAD2</i> mRNA expression results determined via qRT-PCR analysis. These findings and understanding of OA synthesis mechanisms could help improve oil quality through breeding and germplasm-based efforts in sunflower.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contrasting germination behavior of nodding broomrape towards soybean seeds- and sprouts-extract is associated with their corresponding phytohormones, sugars and isoflavones contents","authors":"Raman Manoharlal,&nbsp;G. V. S. Saiprasad","doi":"10.1007/s11738-024-03723-y","DOIUrl":"10.1007/s11738-024-03723-y","url":null,"abstract":"<div><p>In the present study, a comparative study involving soybean (<i>Glycine max</i> L.) seeds- (SPE) and sprouts-extract (SSE) as a pre-conditioning media was performed to evaluate their allelopathic impact on nodding broomrape (<i>Orobanche cernua</i> L.) germination. Contrasting germination behaviour of broomrape, characterised by respective inhibition and induction in its germination was observed in response to an optimised concentration of SPE and SSE. Further study was conducted to explore the phyto-constituents of soybean seed- (SSP) and sprout-flour (SSF) responsible for differential germination of broomrape. Plant-growth regulators quantification revealed a relative enhanced bioactive gibberellin (GA₄) to abscisic acid (ABA) ratio (GA₄: ABA) in SSF. Carbohydrates analysis revealed a relative reduced content of soluble-sugars, starch, sucrose (SUC) and raffinose-family oligosaccharides (RFOs) in concomitant with relative enhanced levels of reducing-sugars, glucose (GLU) and galactose (GAL) in SSF. The isoflavone content (IFC) analysis revealed a relative enhanced level of total IFC and individual bioactive aglycones [viz. daidzein, glycitein and genistein (GEN)] in SSF. Exogenous applications of GA₃, ABA and its antagonists (viz. uniconazole and fluridone), mono- (viz. GLU and GAL), oligo-saccharides (viz. SUC and RFOs), SPE₅₀ and SSE₅₀ pre-treated with enzyme-mix harbouring RFOs- and SUC-metabolizing enzymes (viz. α-galactosidase + invertase) and GEN as a pre-conditioning media of broomrape were also in agreement with the aforesaid observations. To the best of our knowledge, this is first report mentioning the contrasting germination behavior of broomrape towards SPE and SSE. Overall, these findings could be explored to formulate the ‘<i>Green</i>’ methods for the control of parasitic-weed infestation in agonomically important crops.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 11","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exogenous application of glutathione induces wheat tolerance to heavy metal stress by modulating the antioxidative enzymatic defenses","authors":"Khalid Iqbal,&nbsp;Muhammad Ibrahim,&nbsp;Anam Khattak,&nbsp;Sarah Ali Khan,&nbsp;Ghazala Nawaz","doi":"10.1007/s11738-024-03721-0","DOIUrl":"10.1007/s11738-024-03721-0","url":null,"abstract":"<div><p>Heavy metal stress destroys plants growth and yield. Glutathione (GSH) is a well-known antioxidant that promotes plant growth by protecting it from abiotic stresses including heavy metal toxicity. Although much has been documented about the role of glutathione in securing plants from stress, its role in safeguarding wheat growth under mercury (Hg) and arsenic (As) stresses is unknown. The present work investigates wheat responses to Hg and As stresses under the exogenous application of GSH. The result showed that Hg and As stresses greatly reduced seed germination and seedling growth such as root/shoot length and fresh weight. Photosynthetic pigments, i.e., chlorophyll a, b, and carotenoid were reduced. However, the H₂O₂ and lipid peroxidation levels were increased under Hg and As stresses in wheat seedlings. The antioxidant enzymatic activities such SOD, POD, and APX increased, while CAT activity decreased under Hg and As stresses. Importantly, the application of 2 mM GSH alone or in combination with Hg and As enhanced seed germination rate, root/shoot length, fresh weight, and photosynthetic pigments in wheat. Contrarily, the level of H₂O₂ and lipid peroxidation were decreased under the individual and combined treatment of Hg + GSH and As + GSH. The antioxidant enzymatic activities such as SOD, POD, and APX were lowered, while CAT activity was enhanced by GSH under Hg and As stress. The present research concludes that supplementation of exogenous GSH can play a significant role in fostering the sensitivity of wheat to Hg and As stress by reducing oxidative stress and modulating the levels of antioxidant enzymes.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence on the effect of priming-induced memory on the mechanisms underlying sugar transport and metabolism in rice plants under salinity","authors":"Tatiana Rossatto,&nbsp;Marcelo Nogueira do Amaral,&nbsp;Priscila Ariane Auler,&nbsp;Márcio Espinosa De Farias,&nbsp;Juliana Aparecida Fernando,&nbsp;Gustavo Maia Souza,&nbsp;Eugenia Jacira Bolacel Braga","doi":"10.1007/s11738-024-03719-8","DOIUrl":"10.1007/s11738-024-03719-8","url":null,"abstract":"<div><p>Priming in plants enables them to store information and better prepare for future stress. This study tested the hypothesis that priming rice plants (cv. BRS AG) improves sugar metabolism and transport in the grain-filling stage through memory effects. We investigated physiological changes, including source–sink parameters, carbohydrate metabolism, gene expression, and vascular adjustments. Rice plants were exposed to 150 mM salt stress during either the V5 vegetative and/or R7–R8 reproductive stages, with samples collected after 7 days of stress and after 2 days of recovery. Our findings reveal that primed plants had a more favorable Na⁺/K⁺ ratio in roots, experienced less leaf stress, and showed increased phloem area and reduced metaxylem area under salt stress. Notably, primed plants maintained stable plant height and shoot dry mass during the grain-filling stage. These results support the hypothesis that salt priming in the vegetative stage alters the responses to subsequent salt exposure, improving ionic homeostasis and sucrose transport, which mitigates salt-stress effects. Priming also influenced the expansion of conducting vessels in leaves and roots, contributing to shoot growth. Enhanced vascular characteristics and the regulation of sucrose and triose-phosphate transporters likely facilitated better carbohydrate remobilization to develop grain production potential. These insights into salt stress memory mechanisms highlight strategies to improve rice yield under challenging environmental conditions.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Citrus rootstocks physiological and anatomical response to heat stress","authors":"Sami Ur Rehman,&nbsp;Waqar Shafqat,&nbsp;Sufian Ikram,&nbsp;Waqas Shafqat Chattha,&nbsp;Rabia Amen,&nbsp;Honghong Deng,&nbsp;Muhammad Fasih Khalid,&nbsp;Muhammad Jafar Jaskani","doi":"10.1007/s11738-024-03709-w","DOIUrl":"10.1007/s11738-024-03709-w","url":null,"abstract":"<div><p>Citrus is a globally grown fruit crop because of the nutritional benefits. Climate change drastically affects plant physiology, morphology, and anatomy. Physiological alterations within plants allow them to adapt to changing environments, however, the degree and quantification of these modifications differs with varieties. Ten exotic and local citrus rootstocks were evaluated based on morphology, physiology, and anatomical response to different heat stress conditions to identify best suitable rootstocks in climate change scenarios. Brazilian sour orange and Gadha dahi showed heat stress tolerance through maintaining plant growth, retention of root and shoot moisture contents, higher photosynthetic pigments and leaf water potential. Higher moisture contents of root and shoot were recorded (66.00 ± 1.1% and 73.00 ± 0.94%) in Brazilian sour orange at moderate levels of stress respectively. Which significantly reduces in Rangpur poona nucellar to (33.33 ± 0.6% and 32.67 ± 1.45%) when the level of stress was intensified. Under moderate and severe stress conditions the lowest chlorophyll a content was recorded in Kirrumakki nucellar (2.20 ± 0.05 mg/g) and Brazilian sour orange (1.32 ± 0.05 mg/g) respectively, due to reduced photosynthetic pigment, thylakoid membrane damage and alteration of chloroplast. Higher H₂O₂ and proline production were indication of tolerant rootstock to heat stress in Brazilian sour orange and Gadha dahi. Two highly tolerant (Brazilian sour orange and Gadha dahi) and two highly sensitive rootstocks (Rangpur poona nucellar and Sunki Bentake) from the experiment were selected for stem and leaf anatomical observations. Brazilian sour orange under heat stress was characterized with thicker cell epidermis which reduce the transpiration and evaporation losses in addition to having higher vascular bundle, xylem, and phloem length. These anatomical modifications ensured the transport of water and nutrients across the plant body which helped in maintaining plant vigor and growth. This study provides valuable knowledge in tolerant citrus rootstock to mitigate global warming.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"46 10","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}