New Phytologist最新文献_第2页

Forest dynamics where typhoon winds blow 台风吹拂下的森林动态

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-14 DOI: 10.1111/nph.20350

Aland H. Y. Chan, Toby D. Jackson, Ying Ki Law, E-Ping Rau, David A. Coomes

{"title":"Forest dynamics where typhoon winds blow","authors":"Aland H. Y. Chan, Toby D. Jackson, Ying Ki Law, E-Ping Rau, David A. Coomes","doi":"10.1111/nph.20350","DOIUrl":"https://doi.org/10.1111/nph.20350","url":null,"abstract":"<h2> Introduction</h2>\u0000Tropical cyclones (TCs), also known as typhoons or hurricanes, are rotating storm systems that bring strong winds and heavy rainfall, often causing substantial damage to natural ecosystems. Even TCs graded 1–2 on the five-point Saffir–Simpson scale bring sustained wind speeds > 125 km h−1, leading to defoliation, branch breakage, bole snapping, and uprooting of forest trees (Tanner et al., 1991; Everham & Brokaw, 1996; Negrón-Juárez et al., 2014; Lin et al., 2020). TCs cause substantial loss of aboveground forest biomass (AGB), with West Mexican and Puerto Rican forests reportedly losing 34% (Parker et al., 2018) and 23% (Hall et al., 2020) of ABG after category 3–4 TC events, respectively. TCs change forest structure, not only by damaging trees but also by remodelling tree architecture amongst survivors (Bonnesoeur et al., 2016; Ankori-Karlinsky et al., 2024). Regions that frequently experience strong TCs have shorter forests with higher stem densities (De Gouvenain & Silander, 2003; Ibanez et al., 2019; Lin et al., 2020), with trees investing into larger basal areas relative to their heights (Ibanez et al., 2019). Under climate change, TCs are becoming less frequent but more intense (Kossin et al., 2020; Chand et al., 2022) and are shifting towards higher latitudes (Murakami et al., 2020; Chand et al., 2022). To predict how these changes might affect forests in the future, it is critical that we have a comprehensive understanding of wind-forest dynamics at various spatiotemporal scales (Ennos, 1997; Lin et al., 2020).\u0000We currently have limited knowledge on how wind, topography, and forest structure affect forest resistance to TCs at a landscape scale. Previous studies have shown that canopy height, soil type, stock density, and management action (e.g. thinning) could all affect forest resistance to strong winds (Cremer et al., 1982; Martin & Ogden, 2006; Gardiner, 2021). However, most of these studies were carried out in coniferous monocultures on flat terrain. We now know that the most valuable forests from biodiversity, carbon, and ecosystem services stand points are those with complex canopy structures (Bohn & Huth, 2016; Jucker et al., 2018; Zhu et al., 2023). Much of these forests also grow on rugged landscapes, where sites a mere few hundred meters apart could have vastly different wind regimes (Finnigan et al., 2020). Only a handful of studies have investigated the factors affecting TC-resistance in these more complex systems ","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"5 4 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

CsIREH1 phosphorylation regulates DELLA protein affecting plant height in cucumber (Cucumis sativus)

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-13 DOI: 10.1111/nph.20309

Hongjiao Zhao, Piaoyun Sun, Can Tong, Xiangbao Li, Tongwen Yang, Yanxin Jiang, Bosi Zhao, Junyang Dong, Biao Jiang, Junjun Shen, Zheng Li

{"title":"CsIREH1 phosphorylation regulates DELLA protein affecting plant height in cucumber (Cucumis sativus)","authors":"Hongjiao Zhao, Piaoyun Sun, Can Tong, Xiangbao Li, Tongwen Yang, Yanxin Jiang, Bosi Zhao, Junyang Dong, Biao Jiang, Junjun Shen, Zheng Li","doi":"10.1111/nph.20309","DOIUrl":"https://doi.org/10.1111/nph.20309","url":null,"abstract":"\u0000<ul>\u0000<li>Plant height is a critical agronomic trait that affects crop yield, plant architecture, and environmental adaptability. Gibberellins (GAs) regulate plant height, with DELLA proteins acting as key repressors in the GA signaling pathway by inhibiting GA-induced growth. While DELLA phosphorylation is essential for regulating plant height, the precise mechanisms underlying this process remain incompletely understood.</li>\u0000<li>In this study, we identified a cucumber mutant with delayed growth, which exhibited reduced sensitivity to GA treatment. Through bulked segregant analysis (BSA-seq) combined with molecular marker linkage analysis, we successfully identified and cloned the gene responsible for the dwarf phenotype, CsIREH1 (INCOMPLETE ROOT HAIR ELONGATION 1), which encodes an AGC protein kinase.</li>\u0000<li>Further research revealed that CsIREH1 interacts with and phosphorylates DELLA proteins, specifically targeting CsGAIP and CsGAI2. We propose that IREH1-dependent phosphorylation of DELLA proteins prevents their excessive accumulation, thereby maintaining normal plant growth.</li>\u0000<li>Therefore, investigating the role of IREH1-mediated DELLA phosphorylation provides valuable insights and theoretical foundations for understanding how plants regulate growth mechanisms.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"63 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Corrigendum to: The Arabidopsis splicing factor PORCUPINE/SmE1 orchestrates temperature-dependent root development via auxin homeostasis maintenance

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-13 DOI: 10.1111/nph.20352

引用次数: 0

Increased chloroplast occupancy in bundle sheath cells of rice hap3H mutants revealed by Chloro-Count: a new deep learning–based tool

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-12 DOI: 10.1111/nph.20332

Julia Lambret Frotte, Pedro P. Buarque de Gusmão, Georgia Smith, Shuen-Fang Lo, Su-May Yu, Ross W. Hendron, Steven Kelly, Jane A. Langdale

{"title":"Increased chloroplast occupancy in bundle sheath cells of rice hap3H mutants revealed by Chloro-Count: a new deep learning–based tool","authors":"Julia Lambret Frotte, Pedro P. Buarque de Gusmão, Georgia Smith, Shuen-Fang Lo, Su-May Yu, Ross W. Hendron, Steven Kelly, Jane A. Langdale","doi":"10.1111/nph.20332","DOIUrl":"https://doi.org/10.1111/nph.20332","url":null,"abstract":"\u0000<ul>\u0000<li>There is an increasing demand to boost photosynthesis in rice to increase yield potential. Chloroplasts are the site of photosynthesis, and increasing their number and size is a potential route to elevate photosynthetic activity. Notably, bundle sheath cells do not make a significant contribution to overall carbon fixation in rice, and thus, various attempts are being made to increase chloroplast content specifically in this cell type.</li>\u0000<li>In this study, we developed and applied a deep learning tool, Chloro-Count, and used it to quantify chloroplast dimensions in bundle sheath cells of OsHAP3H gain- and loss-of-function mutants in rice.</li>\u0000<li>Loss of OsHAP3H increased chloroplast occupancy in bundle sheath cells by 50%. When grown in the field, mutants exhibited increased numbers of tillers and panicles. The implementation of Chloro-Count enabled precise quantification of chloroplasts in loss- and gain-of-function OsHAP3H mutants and facilitated a comparison between 2D and 3D quantification methods.</li>\u0000<li>Collectively, our observations revealed that a mechanism operates in bundle sheath cells to restrict chloroplast occupancy as cell dimensions increase. That mechanism is unperturbed in Oshap3H mutants but loss of OsHAP3H function leads to an increase in chloroplast numbers. The use of Chloro-Count also revealed that 2D quantification is compromised by the positioning of chloroplasts within the cell.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"91 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Proper activity of the age-dependent miR156 is required for leaf heteroblasty and extrafloral nectary development in Passiflora spp.

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-12 DOI: 10.1111/nph.20343

Jessica Ribeiro Soares, Kerly Jessenia Moncaleano Robledo, Vinicius Carius de Souza, Lana Laene Lima Dias, Lazara Aline Simões Silva, Emerson Campos da Silveira, Claudinei da Silva Souza, Elisandra Silva Sousa, Pedro Alexandre Sodrzeieski, Yoan Camilo Guzman Sarmiento, Elyabe Monteiro de Matos, Thais Castilho de Arruda Falcão, Lilian da Silva Fialho, Valeria Monteze Guimaraes, Lyderson Facio Viccini, Flaviani Gabriela Pierdona, Elisson Romanel, Jim Fouracre, Wagner Campos Otoni, Fabio Tebaldi Silveira Nogueira

{"title":"Proper activity of the age-dependent miR156 is required for leaf heteroblasty and extrafloral nectary development in Passiflora spp.","authors":"Jessica Ribeiro Soares, Kerly Jessenia Moncaleano Robledo, Vinicius Carius de Souza, Lana Laene Lima Dias, Lazara Aline Simões Silva, Emerson Campos da Silveira, Claudinei da Silva Souza, Elisandra Silva Sousa, Pedro Alexandre Sodrzeieski, Yoan Camilo Guzman Sarmiento, Elyabe Monteiro de Matos, Thais Castilho de Arruda Falcão, Lilian da Silva Fialho, Valeria Monteze Guimaraes, Lyderson Facio Viccini, Flaviani Gabriela Pierdona, Elisson Romanel, Jim Fouracre, Wagner Campos Otoni, Fabio Tebaldi Silveira Nogueira","doi":"10.1111/nph.20343","DOIUrl":"https://doi.org/10.1111/nph.20343","url":null,"abstract":"\u0000<ul>\u0000<li>Passion flower extrafloral nectaries (EFNs) protrude from leaves and facilitate mutualistic interactions with insects; however, how age cues control EFN growth remains poorly understood.</li>\u0000<li>Here, we examined leaf and EFN morphology and development of two Passiflora species with distinct leaf shapes, and compared the phenotype of these to transgenics with manipulated activity of the age-dependent miR156, which targets several SQUAMOSA PROMOTER-BINDING PROTEIN-LIKE (SPL) transcription factors.</li>\u0000<li>Low levels of miR156 correlated with leaf maturation and EFN formation in Passiflora edulis and P. cincinnata. Accordingly, manipulating miR156 activity affected leaf heteroblasty and EFN development. miR156-overexpressing leaves exhibited less abundant and tiny EFNs in both Passiflora species. EFN abundance remained mostly unchanged when miR156 activity was reduced, but it led to larger EFNs in P. cincinnata. Transcriptome analysis of young leaf primordia revealed that miR156-targeted SPLs may be required to properly express leaf and EFN-associated genes. Importantly, altered miR156 activity impacted sugar profiles of the nectar and modified ecological relationships between EFNs and ants.</li>\u0000<li>Our work provides evidence that the miR156/SPL module indirectly regulates EFN development in an age-dependent manner and that the EFN development program is closely associated with the heteroblastic developmental program of the EFN-bearing leaves.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"6 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Nitrogen availability in soil controls uptake of different nitrogen forms by plants

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-11 DOI: 10.1111/nph.20335

Min Liu, Xingliang Xu, Wolfgang Wanek, Jian Sun, Richard D. Bardgett, Yuqiang Tian, Xiaoyong Cui, Lili Jiang, Zeqing Ma, Yakov Kuzyakov, Hua Ouyang, Yanfen Wang

{"title":"Nitrogen availability in soil controls uptake of different nitrogen forms by plants","authors":"Min Liu, Xingliang Xu, Wolfgang Wanek, Jian Sun, Richard D. Bardgett, Yuqiang Tian, Xiaoyong Cui, Lili Jiang, Zeqing Ma, Yakov Kuzyakov, Hua Ouyang, Yanfen Wang","doi":"10.1111/nph.20335","DOIUrl":"https://doi.org/10.1111/nph.20335","url":null,"abstract":"\u0000<ul>\u0000<li>Nitrogen (N) uptake by plant roots from soil is the largest flux within the terrestrial N cycle. Despite its significance, a comprehensive analysis of plant uptake for inorganic and organic N forms across grasslands is lacking.</li>\u0000<li>Here we measured in situ plant uptake of 13 inorganic and organic N forms by dominant species along a 3000 km transect spanning temperate and alpine grasslands. To generalize our experimental findings, we synthesized data on N uptake from 60 studies encompassing 148 plant species world-wide.</li>\u0000<li>Our analysis revealed that alpine grasslands had faster NH4+ uptake than temperate grasslands. Most plants preferred NO3− (65%) over NH4+ (24%), followed by amino acids (11%). The uptake preferences and uptake rates were modulated by soil N availability that was defined by climate, soil properties, and intrinsic characteristics of the N form.</li>\u0000<li>These findings pave the way toward more fully understanding of N cycling in terrestrial ecosystems, provide novel insights into the N form-specific mechanisms of plant N uptake, and highlight ecological consequences of chemical niche differentiation to reduce competition between coexisting plant species.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"239 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Identification of fossil juniper seeds from Rancho La Brea (California, USA): drought and extirpation in the Late Pleistocene 拉布雷亚牧场（美国加利福尼亚州）杜松种子化石的鉴定：晚更新世的干旱与灭绝

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-10 DOI: 10.1111/nph.20324

Jessie George, Monica Dimson, Regan E. Dunn, Emily L. Lindsey, Aisling B. Farrell, Brenda Paola Aguilar, Glen M. MacDonald

{"title":"Identification of fossil juniper seeds from Rancho La Brea (California, USA): drought and extirpation in the Late Pleistocene","authors":"Jessie George, Monica Dimson, Regan E. Dunn, Emily L. Lindsey, Aisling B. Farrell, Brenda Paola Aguilar, Glen M. MacDonald","doi":"10.1111/nph.20324","DOIUrl":"https://doi.org/10.1111/nph.20324","url":null,"abstract":"<h2> Introduction</h2>\u0000The asphaltic fossil deposits at the Rancho La Brea (RLB) locality in Los Angeles, California, USA (Fig. 1) are internationally known for the preservation of Pleistocene mega-mammals such as sabertoothed cats (Smilodon fatalis), dire wolves (Aenocyon dirus), and Columbian mammoths (Mammuthus columbi). What is less known is that the asphaltic seeps also captured and preserved an abundance of plant macrofossils, including seeds, leaves, and wood, over the site's c. 60 000 yr (60 ka) depositional history. This provides an exceptional opportunity for long-term and taxonomically highly resolved vegetation reconstructions to be made across the Late Pleistocene and Holocene for southern California. While plant material has been identified in the past with species aligning to a broad diversity of California plant communities such as closed-cone conifer forests, coastal sage scrub, oak woodland, and chaparral (Frost, 1927; Templeton, 1956, 1964; Warter, 1976), before the present study, no effort has been made to radiocarbon date plant fossils or place them into any chronological context across the 60 ka preservational window at RLB. Such a record is critical in understanding the ecology of the RLB fauna.\u0000<figure><picture>\u0000<source media=\"(min-width: 1650px)\" srcset=\"/cms/asset/aecd2724-afb4-425e-8aae-3cabeb8d6b52/nph20324-fig-0001-m.jpg\"/><img alt=\"Details are in the caption following the image\" data-lg-src=\"/cms/asset/aecd2724-afb4-425e-8aae-3cabeb8d6b52/nph20324-fig-0001-m.jpg\" loading=\"lazy\" src=\"/cms/asset/74e1a49e-99a5-4769-98e5-bda29bc5afdb/nph20324-fig-0001-m.png\" title=\"Details are in the caption following the image\"/></picture><figcaption>\u0000<div>Fig. 1<div>Open in figure viewerPowerPoint</div>\u0000</div>\u0000<div>Map of the location of the La Brea Tar Pit (Rancho La Brea) fossil deposits (a) within the Los Angeles Basin, (b) California, and (c) United States.</div>\u0000</figcaption>\u0000</figure>\u0000During the past 60 ka, covering marine isotope stages (MISs) 3-1, significant long-term shifts in global climate occurred with the growth and decline of continental ice sheets. Abrupt millennial-scale climatic events including 17 Dansgaard–Oeschger (D-O) warming events and five of the more extreme cold intervals known as Heinrich stadials punctuated the glacial and interglacial phases, culminating in the Bølling–Allerød and Younger Dryas at the start of Holocene warming (Asmerom et al., 2010; Wagner et al., 2010; Renssen et al., 2018). The environmental upheaval occurring at this time includes the spread of humans in North America (Bennett et al., 2021) and the disappearance of much of the world's megafauna (Barnosky et al., 2011; O'Keefe et al., 2023</spa","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"28 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

MdHY5 positively regulates cold tolerance in apple by integrating the auxin and abscisic acid pathways MdHY5 通过整合辅助素和脱落酸途径积极调节苹果的耐寒性

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-10 DOI: 10.1111/nph.20333

Xiaomin Liu, Jiangtong Wei, Sujuan Li, Jiang Li, Huifang Cao, Dong Huang, Danni Zhang, Zhijun Zhang, Tengteng Gao, Ying Zhang, Fengwang Ma, Chao Li

{"title":"MdHY5 positively regulates cold tolerance in apple by integrating the auxin and abscisic acid pathways","authors":"Xiaomin Liu, Jiangtong Wei, Sujuan Li, Jiang Li, Huifang Cao, Dong Huang, Danni Zhang, Zhijun Zhang, Tengteng Gao, Ying Zhang, Fengwang Ma, Chao Li","doi":"10.1111/nph.20333","DOIUrl":"https://doi.org/10.1111/nph.20333","url":null,"abstract":"\u0000<ul>\u0000<li>Low-temperature stress causes various types of physiological and biochemical damage to plants. The basic leucine zipper (bZIP) family transcription factor HY5 plays a significant role in multiple stress responses in plants.</li>\u0000<li>Here, cold stress was found to induce the upregulation of MdHY5 expression, which, in turn, positively regulates the cold tolerance of apple (Malus domestica). MdHY5 directly interacts the promoters of MdGH3-2/12 (auxin-amido synthetase) and inhibits their expression. However, low-temperature stress inhibits the regulation of MdGH3-2/12 by MdHY5, which suppresses the increase in indole-3-acetic acid (IAA) mediated by the MdHY5-MdGH3-2/12 module.</li>\u0000<li>Alternatively, MdHY5 directly interacts with the promoter of MdNCED2, a crucial enzyme in the biosynthesis of abscisic acid (ABA), thereby activating its expression. Additionally, cold stress enhances the regulation of MdNCED2 by MdHY5, which leads to the promotion of the increase in ABA mediated by the MdHY5-MdNCED2 module. Therefore, under low-temperature stress, MdHY5 reduces the ratio of IAA : ABA within apple plants by regulating MdGH3-2/12 and MdNCED2, thereby indirectly promoting the accumulation of anthocyanins, which further improves the cold tolerance of apple.</li>\u0000<li>This study establishes a theoretical framework for the multiple roles and regulatory mechanisms of HY5 in integrating the IAA and ABA pathways under cold stress.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"200 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Natural variation in root exudate composition in the genetically structured Arabidopsis thaliana in the Iberian Peninsula

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-10 DOI: 10.1111/nph.20314

Harihar Jaishree Subrahmaniam, F. Xavier Picó, Thomas Bataillon, Camilla Lind Salomonsen, Marianne Glasius, Bodil K. Ehlers

{"title":"Natural variation in root exudate composition in the genetically structured Arabidopsis thaliana in the Iberian Peninsula","authors":"Harihar Jaishree Subrahmaniam, F. Xavier Picó, Thomas Bataillon, Camilla Lind Salomonsen, Marianne Glasius, Bodil K. Ehlers","doi":"10.1111/nph.20314","DOIUrl":"https://doi.org/10.1111/nph.20314","url":null,"abstract":"<h2> Introduction</h2>\u0000Plant root exudates encompass a vast array of primary (e.g. carbohydrates, amino acids, and organic acids) and secondary metabolites (e.g. flavonoids, terpenoids, and alkaloids) that shape the physical, chemical, and biological properties of the soil (Oburger & Jones, 2018). They also facilitate nutrient cycling and mediate biotic interactions in the rhizosphere, thereby fostering a healthy soil ecosystem (Badri & Vivanco, 2009; Rasmann & Hiltpold, 2022). Despite the ecological relevance of root exudates, several factors, such as stress and developmental status, influence their chemical composition and challenge their quantification. For instance, stress by elevated phosphorus increases pthalic acid in Cyperus alternifolius (Duan et al., 2020), hydric stress induces various organic acids in Zea mays (Song et al., 2012), and pathogen infection in Arabidopsis thaliana stimulates long-chain fatty acids and amino acids that recruit protective Pseudomonas species (Wen et al., 2021). Furthermore, development also affects exudate profiles in A. thaliana with sugar alcohols decreasing and amino acids increasing over time in early developmental stages (Chaparro et al., 2013), whereas young fir trees exudate more carbohydrates and quercetin than older trees, which secrete more lipids and salicylic acids, shifting from nutrient acquisition to defense over-development (Chen et al., 2023). Given the influence of root exudates on plant–environment interactions and adaptive strategies (Novoplansky, 2019; Williams & de Vries, 2020; Subrahmaniam et al., 2023), unraveling the chemistry of root exudates may help decipher the complexity of plant metabolism but also the ecology of plant communities (Mommer et al., 2016; van Dam & Bouwmeester, 2017; McLaughlin et al., 2023).\u0000However, our knowledge of natural variation in root exudate composition is rather scarce (Vives-Peris et al., 2020; Escolà Casas & Matamoros, 2021; Wang et al., 2021). This is a problem because understanding natural variation in plant traits is of paramount importance in different disciplines, as natural variation reflects long-term evolutionary dynamics, can reveal environmental factors driving this variation, and facilitates the exploration of the genetic basis of trait differences (Mitchell-Olds & Schmitt, 2006; Alonso-Blanco et al., 2009). One reason for the scarcity of studies on natural variation in plant root exudates has to do with the technical challenges for capturing and analyzing the complex chemical data from root exudates (van Dam & Bouwmeester, 2017; Obu","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"19 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142804806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

MtNAD1 associates with the autophagy complex to contribute to the degradation of immunity-related proteins in Medicago truncatula nodules

IF 9.4 1区生物学

New Phytologist Pub Date : 2024-12-10 DOI: 10.1111/nph.20336

Ru Dong, Weiyun Wang, Na Luo, Haoxing Li, Jiahui Liu, Yanan Wang, Ying Ye, Hui Zhu, Faqiang Li, Haixiang Yu, Yangrong Cao

{"title":"MtNAD1 associates with the autophagy complex to contribute to the degradation of immunity-related proteins in Medicago truncatula nodules","authors":"Ru Dong, Weiyun Wang, Na Luo, Haoxing Li, Jiahui Liu, Yanan Wang, Ying Ye, Hui Zhu, Faqiang Li, Haixiang Yu, Yangrong Cao","doi":"10.1111/nph.20336","DOIUrl":"https://doi.org/10.1111/nph.20336","url":null,"abstract":"\u0000<ul>\u0000<li>Plant immunity is suppressed in the symbiotic nodule cells, thereby facilitating rhizobial infection. Medicago truncatula NODULES WITH ACTIVATED DEFENSE1 (MtNAD1) is crucial for suppressing immunity in nodules; however, its molecular function is unclear.</li>\u0000<li>We explored the molecular basis of the role of MtNAD1 in suppressing innate immunity in M. truncatula nodules.</li>\u0000<li>Medicago truncatula mutants lacking MtATG7 produced defective nodules, sharing some similarities with the Mtnad1 mutant nodules. Furthermore, MtNAD1 interacted with several immunity-related proteins, including BAX-inhibitor1a (MtBI-1a), two Lysin-motif proteins (MtLYM1/2), Pathogenesis-related10 (MtPR10c/d), MtMPK3/6, and two Lysin-motif receptor kinases (MtLYK8/9). In addition, MtNAD1 and the autophagy pathway contributed to the reduction of MtBI-1, MtPR10c/d, and MtLYM1/2 protein levels in planta. Knocking out either the MtBI-1 or MtLYM1/2 gene in the M. truncatula nad1 mutant can partially restore the defective nodules of the nad1 mutant.</li>\u0000<li>Our results demonstrate that MtNAD1 associates with the autophagy pathway by interacting with MtATG8, contributing to the degradation of several immunity-related proteins in M. truncatula nodules during rhizobial colonization and thereby supporting the development of a successful symbiosis.</li>\u0000</ul>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"7 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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