New Phytologist最新文献_第7页

Elevation shapes alpine snow algal blooms and their influence on albedo reduction. 海拔对高山雪藻华的影响及其对反照率降低的影响。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-25 DOI: 10.1111/nph.71360

Pablo Almela, Scott Hotaling, J Joseph Giersch, Helena C L Klip, James J Elser, Trinity L Hamilton

{"title":"Elevation shapes alpine snow algal blooms and their influence on albedo reduction.","authors":"Pablo Almela, Scott Hotaling, J Joseph Giersch, Helena C L Klip, James J Elser, Trinity L Hamilton","doi":"10.1111/nph.71360","DOIUrl":"10.1111/nph.71360","url":null,"abstract":"Snow algae darken snowpacks and accelerate melt world-wide. Although elevation strongly structures mountain snowfields, its influence on snow algal traits and their effects on snowpack reflectance remains unclear. Here, we investigated snow algal blooms across an elevational range of 1059-3423 m above sea level (asl) in the Cascade Range (California, Oregon, Washington) and the Rocky Mountains (Utah, Wyoming, Montana). We analyzed 294 snow samples and quantified algal community composition, algal cell density, cell size, pigment concentrations, and snow albedo. We further examined elevation-dependent patterns within Sanguina nivaloides-dominated blooms (117 of 206 bloom samples). Across samples spanning clean snow and algal blooms, algal cell density emerged as the strongest biological predictor of albedo, whereas pigment-related variables showed no consistent effects. Within Sanguina nivaloides-dominated blooms, neither relative abundance nor algal cell density varied systematically with elevation. Instead, mean cell size increased with elevation, while per-cell pigment concentrations declined, leading to higher astaxanthin ratios driven primarily by reductions in Chla per cell. These elevation-dependent shifts in cell size and pigment balance were consistent across both mountain ranges, indicating phenotypic acclimation to increasing environmental stress with elevation. Together, these findings link cellular-scale acclimation of a widespread snow algae to radiative processes shaping mountain snowpacks.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"2482-2496"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443302/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148320111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Small-scale adaptation to geothermal soil heating in a perennial herb revealed by combining crosses and transplantations. 多年生草本植物对地热土壤加热的小尺度适应。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-12 DOI: 10.1111/nph.71351

Alicia Valdés, Vigdís F Helmutsdóttir, Bryndís Marteinsdóttir, Johan Ehrlén

{"title":"Small-scale adaptation to geothermal soil heating in a perennial herb revealed by combining crosses and transplantations.","authors":"Alicia Valdés, Vigdís F Helmutsdóttir, Bryndís Marteinsdóttir, Johan Ehrlén","doi":"10.1111/nph.71351","DOIUrl":"10.1111/nph.71351","url":null,"abstract":"Identifying environmental factors associated with local adaptation and traits under selection is key to linking evolutionary processes to the environment. While reciprocal transplantation studies and provenance experiments often have demonstrated adaptation at relatively large spatial scales, adaptation can also occur at very small spatial scales. Combining a crossing experiment with field transplantations, we investigated whether Cerastium fontanum has adapted to geothermally induced small-scale soil temperature differences. Offspring representing a wide range of parental soil temperatures were transplanted across the same temperature range, and traits and fitness components were measured over 2 yr. We evaluated the relationship between plant performance and soil temperatures, the degree of adaptation to their source thermal environment, and the dependence of adaptation on flowering time. Survival, flowering incidence, and overall fitness were lower in warmer soils. However, adaptation to temperature was asymmetric; while all plants performed well at colder sites, individuals from colder origins performed poorly at warmer sites. Flowering time and fitness varied in relation to soil temperature, as well as the difference between planting and source thermal environments. Our findings indicate that small-scale variation in soil temperature underlies fine-scale adaptation and provides important knowledge to understand evolutionary effects of microclimatic variation.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"3008-3020"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13442996/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148240511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A β-1,3-glucanase antagonizes a phase-separating WRKY repressor to confer saline-alkaline tolerance in rice. β-1,3-葡聚糖酶拮抗相分离WRKY抑制因子，使水稻耐盐碱。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-19 DOI: 10.1111/nph.71368

Tian-Jing Wang, Shuangzhan Huang, Xin Tian, Dongxiao Zhou, Jianying Xing, Wenxin Liu, Wenhui Xu, Shangyong Xue, Shitao Li, Dae-Jin Yun, Xinglin Du, Zheng-Yi Xu

{"title":"A β-1,3-glucanase antagonizes a phase-separating WRKY repressor to confer saline-alkaline tolerance in rice.","authors":"Tian-Jing Wang, Shuangzhan Huang, Xin Tian, Dongxiao Zhou, Jianying Xing, Wenxin Liu, Wenhui Xu, Shangyong Xue, Shitao Li, Dae-Jin Yun, Xinglin Du, Zheng-Yi Xu","doi":"10.1111/nph.71368","DOIUrl":"10.1111/nph.71368","url":null,"abstract":"Saline-alkaline stress imposes combined ionic and high-pH challenges that severely limit rice productivity, yet the molecular mechanisms linking stress perception to transcriptional reprogramming remain poorly understood. Here, we identify the WRKY transcription factor OsWRKY1 as a central negative regulator of saline-alkaline tolerance in rice. Loss of OsWRKY1 markedly enhances stress tolerance, whereas its overexpression causes hypersensitivity. Using inducible transcriptomics and DAP-seq, we show that OsWRKY1 directly represses genes involved in ion transport, nutrient uptake, osmotic adjustment, and redox homeostasis. Unexpectedly, OsWRKY1 undergoes stress-induced liquid-liquid phase separation (LLPS) in the nucleus, driven by a long intrinsically disordered region (IDR1) that is required for its full repressive activity. Saline-alkaline stress specifically induces the binding of the β-1,3-glucanase OsGH17 to OsWRKY1. OsGH17 directly interacts with IDR1, reduces OsWRKY1 DNA binding, decreases OsWRKY1 condensate formation, and relieves OsWRKY1-mediated transcriptional repression. Genetic epistasis indicates that OsWRKY1 and OsGH17 function in the same pathway in the saline-alkaline stress response, with OsWRKY1 being epistatic to OsGH17. Together, our findings reveal a previously unrecognized mechanism in which a β-1,3-glucanase with a noncanonical regulatory role modulates the behavior of a phase-separating transcriptional repressor and promotes stress-responsive gene expression, providing new insight into plant adaptation to saline-alkaline environments.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"3313-3331"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13491280/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148284495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Separating intrinsic from extrinsic stomatal control in different soils. 在不同土壤中分离内在和外在气孔控制。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-15 DOI: 10.1111/nph.71364

Ibrahim Bourbia, Luke Yates, Andrea Carminati, Timothy J Brodribb

{"title":"Separating intrinsic from extrinsic stomatal control in different soils.","authors":"Ibrahim Bourbia, Luke Yates, Andrea Carminati, Timothy J Brodribb","doi":"10.1111/nph.71364","DOIUrl":"10.1111/nph.71364","url":null,"abstract":"The regulation of stomata in response to environmental changes is one of the most dynamic and important behaviours in vascular plants, playing a central role in determining gas exchange and vulnerability to drought. Yet whether this regulation is determined by intrinsic species physiology or by soil hydraulic properties or a combination of both remains unsolved. Here, we use a long-term dataset of needle water potential (Ψneedle) measurements to compare stomatal regulation in a hardy conifer, Callitris rhomboidea, growing at two sites with contrasting soil textures: sand and clay-loam. Inferred stomatal sensitivity to water potential differed between soil types when expressed against soil water potential but exhibited a universal relationship to Ψneedle. This observation aligned with the predictions from an optimal soil water extraction model, indicating that distinct optimal water extraction in the two soil types could be achieved through a common relationship between stomatal conductance and Ψneedle. Our results suggest that the primary driver of stomatal response to soil and atmospheric dryness lies in a common response to leaf water potential. This work reconciles competing ideas of stomatal control, indicating how the appearance of soil-specific behaviour is in fact the expected consequence of a single, optimal physiological behaviour across soil types. Characterising the variation in species-specific stomatal response to leaf water potential will enable comparisons of water extraction behaviour between species in different soils.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"2532-2541"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443157/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148260102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resolving root and mycorrhizal strategies in response to soil phosphorus addition in forest ecosystems: a global meta-analysis. 解决根和菌根策略对森林生态系统土壤磷添加的响应：一项全球荟萃分析。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 DOI: 10.1111/nph.71540

Yuanzhi Yang, Ganxin Feng, David F R P Burslem, David Johnson, Jieyi Liu, Qiuyue Gong, Minxia Liang, Shixiao Yu, Xubing Liu

{"title":"Resolving root and mycorrhizal strategies in response to soil phosphorus addition in forest ecosystems: a global meta-analysis.","authors":"Yuanzhi Yang, Ganxin Feng, David F R P Burslem, David Johnson, Jieyi Liu, Qiuyue Gong, Minxia Liang, Shixiao Yu, Xubing Liu","doi":"10.1111/nph.71540","DOIUrl":"https://doi.org/10.1111/nph.71540","url":null,"abstract":"Phosphorus (P) is a key and often scarce element for the growth and regeneration of trees. Formation of diversified roots and collaboration with different mycorrhizal fungi are crucial mechanisms for nutrient acquisition and species coexistence in forest ecosystems. However, how soil P enrichment modifies functional traits and mycorrhizal symbioses of absorptive tree roots remains unclear. We conducted a comprehensive meta-analysis of 601 observations from 108 studies to assess how fine root morphological, chemical, mycorrhizal, and enzymatic traits respond to soil P addition. We revealed that fine root length was generally promoted and mycorrhizal colonization reduced by P addition, with both effects intensifying along a gradient of P additions. P addition promoted root P concentration for both arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) trees, indicating an overall improvement in plant P status. However, AM trees showed stronger increases in root length, whereas ECM trees showed stronger increases in mycorrhizal fungal biomass. Our findings highlight the significant changes in fine root traits in response to soil P enrichment exhibited by AM and ECM trees, which may lead to different growth strategies between the two main mycorrhizal types and may contribute significantly to ecological niche partitioning and species coexistence under heterogeneous nutrient conditions.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148876182","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

Still standing: persistence traits capture belowground plant functions beyond resource exploration and acquisition. 仍然存在：持久性特征捕捉地下植物功能超越资源勘探和获取。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 DOI: 10.1111/nph.71544

Shersingh Joseph Tumber-Dávila, Karl Andraczek, Daniel C Laughlin, Helge Bruelheide, Aline B Bombo, Ying Fan, Alessandra Fidelis, Grégoire T Freschet, Lena Hartmann, Justus Hennecke, Cody Coyotee Howard, Saheed O Jimoh, Jitka Klimešová, Liesje Mommer, Tsumbedzo Ramalevha, Frances Siebert, Alexandra Weigelt, Joana Bergmann

{"title":"Still standing: persistence traits capture belowground plant functions beyond resource exploration and acquisition.","authors":"Shersingh Joseph Tumber-Dávila, Karl Andraczek, Daniel C Laughlin, Helge Bruelheide, Aline B Bombo, Ying Fan, Alessandra Fidelis, Grégoire T Freschet, Lena Hartmann, Justus Hennecke, Cody Coyotee Howard, Saheed O Jimoh, Jitka Klimešová, Liesje Mommer, Tsumbedzo Ramalevha, Frances Siebert, Alexandra Weigelt, Joana Bergmann","doi":"10.1111/nph.71544","DOIUrl":"https://doi.org/10.1111/nph.71544","url":null,"abstract":"Belowground plant trait research has predominantly focused on trade-offs in fine-root traits via the root economics space (RES). Yet, this fine-root framework captures only a fraction of the functional strategies plants employ beneath the soil surface. Here, we broaden the perspective on belowground plant functioning by integrating traits related to root system extent, clonality, and bud banks, using data from the new UNDERPLOT dataset. This integration links measurable traits to key belowground functions: resource acquisition, spatial exploration, and persistence. Our analysis shows that the fine-root economics space explains less than 5% of the variation in traits related to root system extent, clonality, and bud banks. Instead, an expanded trait analysis reveals three significant dimensions, explaining 62% of total trait variation. The third dimension represents an independent, persistence-related gradient, not captured by existing root economics frameworks. We propose that understanding belowground plant strategies requires embracing additional functional gradients. The strategy of persistence, in particular, varies significantly across growth forms and is a critical dimension of plant response to resource limitation and stress, becoming increasingly important as global change shifts disturbance regimes.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":""},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148876205","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

Apple ZAT11, a C2H2-type zinc finger protein, enhances resistance to Penicillium expansum by affecting jasmonic acid biosynthesis in apple. 苹果ZAT11是一种c2h2型锌指蛋白，通过影响苹果茉莉酸的生物合成来增强苹果对膨胀青霉的抗性。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-08 DOI: 10.1111/nph.71312

Yuchun Lu, Kaili Wang, Yingying Su, Solairaj Dhanasekaran, Qiya Yang, Hongyin Zhang

{"title":"Apple ZAT11, a C2H2-type zinc finger protein, enhances resistance to Penicillium expansum by affecting jasmonic acid biosynthesis in apple.","authors":"Yuchun Lu, Kaili Wang, Yingying Su, Solairaj Dhanasekaran, Qiya Yang, Hongyin Zhang","doi":"10.1111/nph.71312","DOIUrl":"10.1111/nph.71312","url":null,"abstract":"Blue mold, caused by Penicillium expansum, is a prevalent postharvest disease of apple and significantly limits apple quality. Apple have key genes underlying their biological stress responses and corresponding functions that remain largely unexplored. Here, we identified MdZAT11, a Cys2/His2 (C2H2)-type zinc finger protein, as a crucial positive regulator of apple resistance to P. expansum infection. Utilizing transcription factor-centered yeast one-hybrid (TF-centered Y1H) and RNA sequencing analyses, we discovered 1059 potential target genes of MdZAT11, with Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment indicating significant enrichment in stress-responsive pathways, particularly jasmonic acid (JA) biosynthesis. Further investigation revealed that MdZAT11 enhances the expression of JA biosynthesis genes (MdAOS, MdAOC, MdLOX6, and MdLOX3.1) by directly binding to their promoters, as demonstrated by electrophoretic mobility shift assays (EMSA), dual-luciferase reporter (DLR) assays, and RT-qPCR analysis, thereby augmenting JA biosynthesis. Taken together, our findings advance understanding of the transcriptional regulation of defense against P. expansum in apple and identify MdZAT11 as a candidate gene worth further investigation for disease resistance in this species.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"2888-2900"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443279/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148206527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eco-evolutionary context modifies a destructive plant invader's response to climate. 生态进化环境改变了破坏性植物入侵者对气候的反应。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-18 DOI: 10.1111/nph.71329

Megan L Vahsen, Justin J Van Ee, Diana Gamba, Toby M Maxwell, Nikki Pirtel, Seth J Romero, David T Barnett, Owen Baughman, David J Ensing, Richard Gill, Martin C Holdrege, Ruth A Hufbauer, Rebecca Hufft, Chandra E Moffat, Jacqueline Ott, Lysandra Pyle, Corinne Schroeder, Eugene W Schupp, Robert K Shriver, Michael Stemkovski, Amy J Symstad, Alexandra K Urza, Dana M Blumenthal, Cynthia Brown, Matthew J Germino, Mevin B Hooten, Jesse R Lasky, Elizabeth A Leger, Lauren M Porensky, Peter B Adler

{"title":"Eco-evolutionary context modifies a destructive plant invader's response to climate.","authors":"Megan L Vahsen, Justin J Van Ee, Diana Gamba, Toby M Maxwell, Nikki Pirtel, Seth J Romero, David T Barnett, Owen Baughman, David J Ensing, Richard Gill, Martin C Holdrege, Ruth A Hufbauer, Rebecca Hufft, Chandra E Moffat, Jacqueline Ott, Lysandra Pyle, Corinne Schroeder, Eugene W Schupp, Robert K Shriver, Michael Stemkovski, Amy J Symstad, Alexandra K Urza, Dana M Blumenthal, Cynthia Brown, Matthew J Germino, Mevin B Hooten, Jesse R Lasky, Elizabeth A Leger, Lauren M Porensky, Peter B Adler","doi":"10.1111/nph.71329","DOIUrl":"10.1111/nph.71329","url":null,"abstract":"Understanding the relationship between climate and fitness will be important when predicting how plant populations respond to climate change. We conducted a replicated common garden experiment (4 sites × 2 yr) with 96 genotypes (n = 22 492 individuals) of the invasive annual grass Bromus tectorum (cheatgrass) to understand how eco-evolutionary context mediates this important relationship. We grew genotypes in varying soil microclimate conditions by manipulating surface albedo, and at two planting densities. We calculated a 'climate mismatch' for each genotype within each microclimate to characterize the role of local adaptation to climate in explaining variation in fitness. Genotype-by-environment interactions increased the predictive accuracy of our statistical model of cheatgrass fitness with strong evidence for local adaptation to source climate. Survival responses to soil microclimate were density-dependent and there was stronger evidence for local adaptation at lower compared with higher planting density. Our model generally predicts increases in fitness with an increase in temperature across source populations. Important eco-evolutionary context (e.g. genotype-by-environment interactions, density dependence) should be considered when predicting plant fitness in an era of rapid environmental change.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"2980-2994"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443356/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148279363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LURP1, a SARD1-regulated protein, coordinates with the helper NLR ADR1 to promote plant immunity. LURP1是sard1调控的蛋白，与辅助NLR ADR1协同促进植物免疫。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-06-17 DOI: 10.1111/nph.71355

Xueru Liu, Weijie Huang, Zhengxi Gong, Chenying Li, Siyu Chen, Shucai Wang, Yuelin Zhang, Xin Li

{"title":"LURP1, a SARD1-regulated protein, coordinates with the helper NLR ADR1 to promote plant immunity.","authors":"Xueru Liu, Weijie Huang, Zhengxi Gong, Chenying Li, Siyu Chen, Shucai Wang, Yuelin Zhang, Xin Li","doi":"10.1111/nph.71355","DOIUrl":"10.1111/nph.71355","url":null,"abstract":"In Arabidopsis, loss of transcription factors Calmodulin-Binding Transcription Activators 1/2/3 (CAMTA1/2/3) results in enhanced defense responses with increased salicylic acid (SA) and N-hydroxy-pipecolic acid (NHP) biosynthesis. This is achieved through modulating the expression of master immune transcription factors SAR Deficient 1 (SARD1) and Calmodulin-Binding Protein 60-like g (CBP60g). SARD4 is an NHP biosynthesis enzyme, the camta2/3 sard4 triple mutant remains dwarfed and autoimmune. To identify positive immune regulators of the SA and NHP pathways, a forward genetic screen was performed using the camta2/3 sard4 mutant. Here, we report on a loss-of-function allele of Late Upregulated in Response to Hyaloperonospora parasitica 1 (lurp1) that suppresses the autoimmunity of camta2/3 sard4. LURP1 transcripts are strongly induced by pathogens. Chromatin immunoprecipitation and expression analyses revealed that LURP1 expression is directly controlled by SARD1. LURP1 belongs to a small gene family. Knocking out LURP1 and its three close homologs compromises both flg22- and nlp20-induced resistance and SA accumulation, supporting their redundant roles in promoting plant defense. Interestingly, LURP1 interacts with the helper nucleotide-binding leucine-rich repeat receptor (hNLR) Activated Disease Resistance 1 (ADR1) family, suggestive of a model where LURP1 boosts pattern-triggered immunity and SA-mediated defense signaling through the ADR1s.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"2852-2866"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13443189/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148273497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporal delays in branch development contribute to vegetative meristem maintenance in perennial grasses. 多年生禾本科植物分支发育的时间延迟有助于营养分生组织的维持。

IF 8.1 1区生物学

New Phytologist Pub Date : 2026-09-01 Epub Date: 2026-07-21 DOI: 10.1111/nph.71441

Ane Charlotte Hjertaas, Hilde Vinje, Jill Christine Preston, Siri Fjellheim

{"title":"Temporal delays in branch development contribute to vegetative meristem maintenance in perennial grasses.","authors":"Ane Charlotte Hjertaas, Hilde Vinje, Jill Christine Preston, Siri Fjellheim","doi":"10.1111/nph.71441","DOIUrl":"10.1111/nph.71441","url":null,"abstract":"Retention of vegetative meristems beyond the first year of flowering underpins perennial growth, yet the developmental mechanisms causing it remain unresolved. To address this knowledge gap, we quantified vegetative shoot branching and flowering architecture in eight annual-perennial species pairs within the grass subfamily Pooideae, tracking thousands of vegetative and reproductive branches within a phylogenetic framework to test whether perenniality is maintained through temporal delays in branch development or spatial segregation of vegetative and reproductive branches. Annuals, except Hordeum vulgare, produced branches at shorter intervals, flowered earlier, and showed more synchronized flowering than their perennial counterparts. Across life histories, flowering progressed from older to younger branches, with little evidence for consistent spatial segregation of vegetative and reproductive branches. In perennial species in the core group, younger branches during the first year of flowering had a lower probability of floral transition, reflecting delayed branch initiation and age-dependent responsiveness to floral signals. Core perennial species branched faster than noncore perennials, indicating lineage-specific differences in developmental pace. Our findings demonstrate that perennial Pooideae retain vegetative meristems through temporal delays in branch development rather than age-independent spatial partitioning, providing a developmental mechanism for perennial persistence and a trait directly relevant to perennializing annual grain crops.","PeriodicalId":48887,"journal":{"name":"New Phytologist","volume":" ","pages":"3656-3668"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13491288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148551092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0