New Phytologist最新文献_第7页

A jasmonate-mediated MAPK cascade regulates rice structural defense against brown planthoppers. 茉莉素介导的MAPK级联调控水稻对褐飞虱的结构防御。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-30 DOI: 10.1111/nph.70612

Siwen Wu,Yumeng Chen,Yingjie Gan,Lanlan Wang,Xinjue Wang,Gaochen Jin,Lei-Lei Li,Jing Lu,Yonggen Lou,Juan Xu,Ran Li

{"title":"A jasmonate-mediated MAPK cascade regulates rice structural defense against brown planthoppers.","authors":"Siwen Wu,Yumeng Chen,Yingjie Gan,Lanlan Wang,Xinjue Wang,Gaochen Jin,Lei-Lei Li,Jing Lu,Yonggen Lou,Juan Xu,Ran Li","doi":"10.1111/nph.70612","DOIUrl":"https://doi.org/10.1111/nph.70612","url":null,"abstract":"Mitogen-activated protein kinase (MAPK) cascades are multi-step signaling pathways that enable plants to respond to diverse environmental challenges. However, the precise mechanisms and components of MAPK cascades involved in defense responses against herbivores remain poorly understood. Here, we studied the biological function and regulatory mechanism of a herbivore-elicited MAPK cascade by transcriptional activation assays, genetic analysis, protein-protein interaction assays, comparative transcriptome analysis, and chemical quantification. We identified three tandemly arrayed MAPK kinase kinase (MKKK) genes (MKKK55, MKKK62, and MKKK70) on rice Chromosome 1, upregulated in response to brown planthopper (BPH) infestation. These genes are transcriptionally regulated by MYC2, the core regulator of jasmonate (JA) signaling in rice. These MKKKs, together with MKK3 and MPK7/14, form a MAPK cascade that mediates rice responses to herbivore attack. Mutations in any component genes increase rice susceptibility to BPH infestation. Mechanistically, this MAPK signaling cascade enhances physical defenses in rice by increasing cellulose deposition in sclerenchyma cell walls through the regulation of cellulose synthase genes. This study highlights the role of the MYC2-MKKK55/62/70-MKK3-MPK7/14 module in mediating a sector of JA-dependent rice defense against herbivores.","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"65 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145194727","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

Actin filaments drive spindle positioning in Arabidopsis meiosis II. 拟南芥减数分裂II中肌动蛋白丝驱动纺锤体定位。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-29 DOI: 10.1111/nph.70625

Yingrui Ma,Hua Jiang

引用次数: 0

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-29 DOI: 10.1111/nph.70615

Hongxia Zhang,Kevin R Hultine,Xinrong Li,Jianqiang Huo,Jingyao Sun,Nate G McDowell

{"title":"Size-related decline in dryland shrubs is related to reductions in hydraulic efficiency and carbon assimilation and not nonstructural carbohydrate depletion.","authors":"Hongxia Zhang,Kevin R Hultine,Xinrong Li,Jianqiang Huo,Jingyao Sun,Nate G McDowell","doi":"10.1111/nph.70615","DOIUrl":"https://doi.org/10.1111/nph.70615","url":null,"abstract":"Plant growth and survival are fundamentally constrained by water transport from roots to leaves, impacting carbon assimilation and associated labile carbon pools. However, physiological constraints on growth and survival vary with plant age, due to changes in metabolic sinks and increases in hydraulic path length from rhizosphere to canopy. We investigated crown dieback, growth, hydraulics, carbon assimilation and nonstructural carbohydrate (NSC) storage in relation to increasing basal diameter of two dominant shrub species (Caragana korshinskii and Artemisia ordosica) at the southeastern edge of the Tengger Desert, China. The aim was to identify mechanisms of decreased performance with plant size in dryland shrubs. Clear contrasts in stomatal regulation of leaf water potentials were detected between species. Despite these contrasts, radial growth, hydraulic transport efficiency (Ks), and carbon assimilation similarly declined in both species with increasing plant size, while NSC reserves remained unchanged. Xylem embolism (percentage loss of conductivity) increased with plant size, resulting in significant reductions in carbon assimilation in both species. Results indicate that hydraulic and potentially carbon assimilation constraints, rather than NSC depletion, govern growth-related dryland shrub decline. These findings improve our understanding of how population demography impacts dryland forest response to climate change.","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"1 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145189200","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

Invasive ectomycorrhizal fungi: belowground insights from South America. 入侵外生菌根真菌：来自南美洲的地下见解。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-28 DOI: 10.1111/nph.70608

Nahuel Policelli,Martin A Nuñez

引用次数: 0

Engineering autonomously luminescent plants using fungal bioluminescence pathway. 利用真菌生物发光途径设计自主发光植物。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-28 DOI: 10.1111/nph.70601

Xiaolei Yu,Tiange Wang,Ci Kong,Hao Du

引用次数: 0

Reciprocal regulation of nitrate and jasmonate signaling by JASMONATE ZIM DOMAIN PROTEIN 1 coordinates plant growth and defense. jasmonate ZIM DOMAIN PROTEIN 1通过调控硝酸盐和茉莉酸信号相互作用，协调植物的生长和防御。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-28 DOI: 10.1111/nph.70609

Wenjiang Pu,Weicheng Wang,Ran Du,Daoxin Xie,Xiaoyi Shan

引用次数: 0

Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants. 叶片进化：整合陆地植物的系统发育、发育动力学和遗传见解。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-28 DOI: 10.1111/nph.70597

Hokuto Nakayama,Neelima R Sinha

{"title":"Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants.","authors":"Hokuto Nakayama,Neelima R Sinha","doi":"10.1111/nph.70597","DOIUrl":"https://doi.org/10.1111/nph.70597","url":null,"abstract":"The acquisition of leaves represented a pivotal innovation in plant evolution, enabling more efficient photosynthesis and providing a foundation for the development of increasingly three-dimensional and morphologically diverse organisms. Paleobotanical studies have revealed that leaves did not arise from a single common origin; rather, they evolved multiple times independently during the diversification of land plants. Despite these insights, the precise evolutionary trajectories leading to leaf formation remain unclear. Reconstructing the evolutionary history of leaves requires a robust phylogenetic framework, a detailed understanding of leaf developmental processes across different plant lineages, and elucidation of the underlying molecular mechanisms. Recent advances in high-throughput (HT) sequencing technologies have dramatically accelerated progress in these areas, offering insights that were unattainable just a decade ago. The widespread availability of HT sequencing has also encouraged researchers to expand their focus beyond traditional model species, thereby promoting a broader appreciation of the evolutionary processes underlying diverse plant traits, including leaf evolution. In this review, we focus on the current understanding of leaf evolution by integrating phylogenetic relationships, the developmental dynamics of the shoot apical meristem - the site of leaf initiation - and comparative analyses of leaf morphogenesis in the context of key regulatory genes across plant lineages.","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"66 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182717","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

Flashy, decoupled, or declining? Single theories fail to explain the diversity of drought mortality signals in tree rings. 浮华、脱钩，还是衰落？单一理论无法解释树木年轮中干旱死亡信号的多样性。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-27 DOI: 10.1111/nph.70605

Alicia Formanack,Kiona Ogle,Drew Peltier

{"title":"Flashy, decoupled, or declining? Single theories fail to explain the diversity of drought mortality signals in tree rings.","authors":"Alicia Formanack,Kiona Ogle,Drew Peltier","doi":"10.1111/nph.70605","DOIUrl":"https://doi.org/10.1111/nph.70605","url":null,"abstract":"Growth patterns recorded in tree rings may predict drought 'winners' and 'losers'. Past studies of drought-killed trees have produced conflicting evidence. Some show killed trees were highly responsive to climate, while others suggest killed trees were climate-insensitive or became less sensitive over time. We leveraged ring width data from 2934 drought-killed and -surviving trees of seven species to compute growth sensitivity to seasonal climate variables via a Bayesian mixed effects model. Aided by clustering analyses, we evaluated how species conformed to three alternative hypotheses (theories): relative to surviving trees, killed trees (H1) have 'flashy' climate responses, (H2) are 'decoupled' from climate, or (H3) have 'declining' sensitivity over time. Differences in growth patterns were not consistent across species or status (surviving/killed). Drought-killed subalpine fir and Engelmann spruce exhibited 'flashy' growth - higher sensitivity of growth to climate over time - compared with survivors. Drought-killed aspen, Scots pine, and Norway spruce showed stable, climate-insensitive growth compared with survivors, suggesting 'decoupling' from climate. Most species showed nonstationary sensitivities, but rather than declining, some sensitivities increased, even in surviving trees. Our flashy-decoupled-declining framework links predictions for future drought-induced mortality to potential mechanisms, enhancing ecological and physiological understanding of growth-climate patterns preceding drought mortality events.","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"23 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153312","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

Promoter cis-element variations in the CgWRKY1-CgZAT12-CgGAD4 module regulate citric acid degradation in Citrus grandis. CgWRKY1-CgZAT12-CgGAD4模块启动子顺式元件的变化调节柑橘中柠檬酸的降解。

IF 9.4 1区生物学

New Phytologist Pub Date : 2025-09-27 DOI: 10.1111/nph.70599

Changle Cai,Xiawan Zhai,Tianzhuo Sun,Panyi Chen,Mengdi Li,Siyang Gao,Chao He,Ji-Hong Liu,Chunlong Li

{"title":"Promoter cis-element variations in the CgWRKY1-CgZAT12-CgGAD4 module regulate citric acid degradation in Citrus grandis.","authors":"Changle Cai,Xiawan Zhai,Tianzhuo Sun,Panyi Chen,Mengdi Li,Siyang Gao,Chao He,Ji-Hong Liu,Chunlong Li","doi":"10.1111/nph.70599","DOIUrl":"https://doi.org/10.1111/nph.70599","url":null,"abstract":"Citric acid plays a key role in determining the quality and flavor of citrus fruits. However, the transcriptional regulatory mechanisms controlling citric acid levels are not well-understood. In this study, we identified a natural bud mutation of the 'Wu Suan (WS)' pomelo (Citrus grandis) variety, which has significantly reduced citric acid content. By comparing the gene expression profiles of 'WS' with the moderate-acid variety 'Gao Ban (GB)', we found that the gene CgGAD4, associated with citric acid degradation, was highly expressed in 'WS'. Overexpression of CgGAD4 decreased citric acid levels, while suppressing its expression increased acidity. CgZAT12 was identified as a transcription factor (TF) that activates CgGAD4. A single nucleotide change in the promoter region of CgGAD4 (from AGTGT to AATGT) in 'WS' enhanced the binding of CgZAT12, leading to higher gene transcriptional activity. Further analysis revealed a variation in the W-box element of the CgZAT12 promoter (from GGTCAA in 'GB' to GATCAA in 'WS'). This change prevents the upstream TF CgWRKY1 from suppressing CgZAT12 in 'WS', unlike in 'GB'. These findings reveal the key genetic variations in the WRKY1-ZAT12-GAD4 regulatory module involved in citric acid degradation and provide new insights into improving citrus fruit quality.","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"2 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153318","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

Unlocking grass leaf development: foundations for tunable cereal design 解锁草叶发育：可调谷物设计的基础。

IF 8.1 1区生物学

New Phytologist Pub Date : 2025-09-27 DOI: 10.1111/nph.70477

Trisha McAllister, Hilde Nelissen, Josh Strable, Annis E. Richardson

{"title":"Unlocking grass leaf development: foundations for tunable cereal design","authors":"Trisha McAllister, Hilde Nelissen, Josh Strable, Annis E. Richardson","doi":"10.1111/nph.70477","DOIUrl":"10.1111/nph.70477","url":null,"abstract":"<p>The grass leaf plays a critical role in global food security, generating the carbon stores in cereal grains, which provide > 50% of global calories. As the global population grows, there is an urgent need to increase food production using fewer resources and to develop more resilient agricultural systems to withstand variable climate conditions and rising socio-economic and environmental costs. Precision engineering of cereal crops, tailored to diverse environmental conditions and agronomic practices, is a vital strategy for achieving food security. Given the fundamental importance of the leaf in driving cereal productivity, it is an ideal engineering target. Leaf development occurs over large temporal and spatial scales and is environmentally regulated, posing significant challenges for predictive engineering approaches and limiting the feasibility of a one-size-fits-all approach. In this review, we synthesise current understanding of cereal leaf development and identify critical developmental biology questions that must be resolved to facilitate the truly programmable plants of the future.</p>","PeriodicalId":214,"journal":{"name":"New Phytologist","volume":"248 4","pages":"1655-1676"},"PeriodicalIF":8.1,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://nph.onlinelibrary.wiley.com/doi/epdf/10.1111/nph.70477","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153313","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