journal
https://read.qxmd.com/read/38509854/exploring-the-molecular-regulation-of-vernalization-induced-flowering-synchrony-in-arabidopsis
#21
JOURNAL ARTICLE
Po-Kai Huang, Johanna Schmitt, Daniel E Runcie
Many plant populations exhibit synchronous flowering, which can be advantageous in plant reproduction. However, molecular mechanisms underlying flowering synchrony remain poorly understood. We studied the role of known vernalization-response and flower-promoting pathways in facilitating synchronized flowering in Arabidopsis thaliana. Using the vernalization-responsive Col-FRI genotype, we experimentally varied germination dates and daylength among individuals to test flowering synchrony in field and controlled environments...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38509454/an-rrm-domain-protein-soe-suppresses-transgene-silencing-in-rice
#22
JOURNAL ARTICLE
Rui Zhao, Wen-Ai Wu, Yi-Hua Huang, Xin-Kai Li, Jia-Qi Han, Wu Jiao, Yin-Na Su, He Zhao, Yang Zhou, Wu-Qiang Cao, Xun Zhang, Wei Wei, Wan-Ke Zhang, Qing-Xin Song, Xin-Jian He, Biao Ma, Shou-Yi Chen, Jian-Jun Tao, Cui-Cui Yin, Jin-Song Zhang
Gene expression is regulated at multiple levels, including RNA processing and DNA methylation/demethylation. How these regulations are controlled remains unclear. Here, through analysis of a suppressor for the OsEIN2 over-expressor, we identified an RNA recognition motif protein SUPPRESSOR OF EIN2 (SOE). SOE is localized in nuclear speckles and interacts with several components of the spliceosome. We find SOE associates with hundreds of targets and directly binds to a DNA glycosylase gene DNG701 pre-mRNA for efficient splicing and stabilization, allowing for subsequent DNG701-mediated DNA demethylation of the transgene promoter for proper gene expression...
March 20, 2024: New Phytologist
https://read.qxmd.com/read/38509445/bringing-europe-s-early-career-plant-scientists-back-together-meeting-report-on-the-12th-european-plant-science-retreat-12-15-september-2023-wageningen-university-wageningen-the-netherlands
#23
JOURNAL ARTICLE
Jana Wittmer, Sophia Müller, Rianne C M Kluck, Kilian Duijts
No abstract text is available yet for this article.
March 20, 2024: New Phytologist
https://read.qxmd.com/read/38503725/genomic-and-pangenomic-analyses-provide-insights-into-the-population-history-and-genomic-diversification-of-bottle-gourd
#24
JOURNAL ARTICLE
Xuebo Zhao, Jingyin Yu, Bidisha Chanda, Jiantao Zhao, Shan Wu, Yi Zheng, Honghe Sun, Amnon Levi, Kai-Shu Ling, Zhangjun Fei
Bottle gourd (Lagenaria siceraria (Mol.) Strandl.) is an economically important vegetable crop and one of the earliest domesticated crops. However, the population history and genomic diversification of bottle gourd have not been extensively studied. We generated a comprehensive bottle gourd genome variation map from genome sequences of 197 world-wide representative accessions, which enables a genome-wide association study for identifying genomic loci associated with resistance to zucchini yellow mosaic virus, and constructed a bottle gourd pangenome that harbors 1534 protein-coding genes absent in the reference genome...
March 19, 2024: New Phytologist
https://read.qxmd.com/read/38503686/the-activation-of-arabidopsis-axillary-buds-involves-a-switch-from-slow-to-rapid-committed-outgrowth-regulated-by-auxin-and-strigolactone
#25
JOURNAL ARTICLE
Zoe Nahas, Fabrizio Ticchiarelli, Martin van Rongen, Jean Dillon, Ottoline Leyser
Arabidopsis thaliana (Arabidopsis) shoot architecture is largely determined by the pattern of axillary buds that grow into lateral branches, the regulation of which requires integrating both local and systemic signals. Nodal explants - stem explants each bearing one leaf and its associated axillary bud - are a simplified system to understand the regulation of bud activation. To explore signal integration in bud activation, we characterised the growth dynamics of buds in nodal explants in key mutants and under different treatments...
March 19, 2024: New Phytologist
https://read.qxmd.com/read/38501546/redesigning-a-s-nitrosylated-pyruvate-dependent-gaba-transaminase-1-to-generate-high-malate-and-saline-alkali-tolerant-tomato
#26
JOURNAL ARTICLE
Minghui Liu, Bili Cao, Jin-Wei Wei, Biao Gong
Although saline-alkali stress can improve tomato quality, the detailed molecular processes that balance stress tolerance and quality are not well-understood. Our research links nitric oxide (NO) and γ-aminobutyric acid (GABA) with the control of root malate exudation and fruit malate storage, mediated by aluminium-activated malate transporter 9/14 (SlALMT9/14). By modifying a specific S-nitrosylated site on pyruvate-dependent GABA transaminase 1 (SlGABA-TP1), we have found a way to enhance both plant's saline-alkali tolerance and fruit quality...
March 19, 2024: New Phytologist
https://read.qxmd.com/read/38501480/divergent-evolution-of-the-alcohol-forming-pathway-of-wax-biosynthesis-among-bryophytes
#27
JOURNAL ARTICLE
Alisa Keyl, Cornelia Herrfurth, Garima Pandey, Ryeo Jin Kim, Lina Helwig, Tegan M Haslam, Sophie de Vries, Jan de Vries, Nora Gutsche, Sabine Zachgo, Mi Chung Suh, Ljerka Kunst, Ivo Feussner
The plant cuticle is a hydrophobic barrier, which seals the epidermal surface of most aboveground organs. While the cuticle biosynthesis of angiosperms has been intensively studied, knowledge about its existence and composition in nonvascular plants is scarce. Here, we identified and characterized homologs of Arabidopsis thaliana fatty acyl-CoA reductase (FAR) ECERIFERUM 4 (AtCER4) and bifunctional wax ester synthase/acyl-CoA:diacylglycerol acyltransferase 1 (AtWSD1) in the liverwort Marchantia polymorpha (MpFAR2 and MpWSD1) and the moss Physcomitrium patens (PpFAR2A, PpFAR2B, and PpWSD1)...
March 19, 2024: New Phytologist
https://read.qxmd.com/read/38501463/organelle-ca-2-cam1-seltp-confers-somatic-cell-embryogenic-competence-acquisition-and-transformation-in-plant-regeneration
#28
JOURNAL ARTICLE
Huihui Guo, Haixia Guo, Li Zhang, Xindi Tian, Jianfei Wu, Yupeng Fan, Tongtong Li, Zhongyuan Gou, Yuxiao Sun, Fan Gao, Jianjun Wang, Guangyao Shan, Fanchang Zeng
Somatic cell totipotency in plant regeneration represents the forefront of the compelling scientific puzzles and one of the most challenging problems in biology. How somatic embryogenic competence is achieved in regeneration remains elusive. Here, we discover uncharacterized organelle-based embryogenic differentiation processes of intracellular acquisition and intercellular transformation, and demonstrate the underlying regulatory system of somatic embryogenesis-associated lipid transfer protein (SELTP) and its interactor calmodulin1 (CAM1) in cotton as the pioneer crop for biotechnology application...
March 19, 2024: New Phytologist
https://read.qxmd.com/read/38494698/dissection-of-rhizosphere-microbiome-and-exploiting-strategies-for-sustainable-agriculture
#29
JOURNAL ARTICLE
Weibing Xun, Yunpeng Liu, Aiyuan Ma, He Yan, Youzhi Miao, Jiahui Shao, Nan Zhang, Zhihui Xu, Qirong Shen, Ruifu Zhang
The rhizosphere microbiome plays critical roles in plant growth and provides promising solutions for sustainable agriculture. While the rhizosphere microbiome frequently fluctuates with the soil environment, recent studies have demonstrated that a small proportion of the microbiome is consistently assembled in the rhizosphere of a specific plant genotype regardless of the soil condition, which is determined by host genetics. Based on these breakthroughs, which involved exploiting the plant-beneficial function of the rhizosphere microbiome, we propose to divide the rhizosphere microbiome into environment-dominated and plant genetic-dominated components based on their different assembly mechanisms...
March 17, 2024: New Phytologist
https://read.qxmd.com/read/38494697/a-major-gene-for-chilling-tolerance-variation-in-indica-rice-codes-for-a-kinase-osctk1-that-phosphorylates-multiple-substrates-under-cold
#30
JOURNAL ARTICLE
Jiawen Wu, Huimin Liu, Yan Zhang, Yingdong Zhang, Dongling Li, Shiyan Liu, Shan Lu, Lihui Wei, Jian Hua, Baohong Zou
Rice is susceptible to chilling stress. Identifying chilling tolerance genes and their mechanisms are key to improve rice performance. Here, we performed a genome-wide association study to identify regulatory genes for chilling tolerance in rice. One major gene for chilling tolerance variation in Indica rice was identified as a casein kinase gene OsCTK1. Its function and natural variation are investigated at the physiological and molecular level by its mutants and transgenic plants. Potential substrates of OsCTK1 were identified by phosphoproteomic analysis, protein-protein interaction assay, in vitro kinase assay, and mutant characterization...
March 17, 2024: New Phytologist
https://read.qxmd.com/read/38494681/complex-control-of-seed-germination-timing-by-erf50-involves-rgl2-antagonism-and-negative-feedback-regulation-of-dog1
#31
JOURNAL ARTICLE
Gerardo Carrera-Castaño, Sara Mira, Iris Fañanás-Pueyo, Rocío Sánchez-Montesino, Ángela Contreras, Christoph Weiste, Wolfgang Dröge-Laser, Luis Gómez, Luis Oñate-Sánchez
Seed dormancy governs germination timing, with both evolutionary and applied consequences. Despite extensive studies on the hormonal and genetic control of these processes, molecular mechanisms directly linking dormancy and germination remain poorly understood. By screening a collection of lines overexpressing Arabidopsis transcription factors, we identified ERF50 as a key gene to control dormancy and germination. To study its regulation, we measured seed-related physiological parameters in loss-of-function mutants and carried out transactivation, protein interaction and ChIP-PCR analyses...
March 17, 2024: New Phytologist
https://read.qxmd.com/read/38494441/weak-evidence-of-provenance-effects-in-spring-phenology-across-europe-and-north-america
#32
JOURNAL ARTICLE
Ziyun Alina Zeng, Elizabeth M Wolkovich
Forecasting the biological impacts of climate change requires understanding how species respond to warmer temperatures through interannual flexible variation vs through adaptation to local conditions. Yet, we often lack this information entirely or find conflicting evidence across studies, which is the case for spring phenology. We synthesized common garden studies across Europe and North America that reported spring event dates for a mix of angiosperm and gymnosperm tree species in the northern hemisphere, capturing data from 384 North American and 101 European provenances (i...
March 17, 2024: New Phytologist
https://read.qxmd.com/read/38494438/plasmodesmata-and-intercellular-molecular-traffic-control
#33
REVIEW
Estee E Tee, Christine Faulkner
Plasmodesmata are plasma membrane-lined connections that join plant cells to their neighbours, establishing an intercellular cytoplasmic continuum through which molecules can travel between cells, tissues, and organs. As plasmodesmata connect almost all cells in plants, their molecular traffic carries information and resources across a range of scales, but dynamic control of plasmodesmal aperture can change the possible domains of molecular exchange under different conditions. Plasmodesmal aperture is controlled by specialised signalling cascades accommodated in spatially discrete membrane and cell wall domains...
March 17, 2024: New Phytologist
https://read.qxmd.com/read/38488269/genetic-underpinnings-of-arthropod-community-distributions-in-populus-trichocarpa
#34
JOURNAL ARTICLE
Sandra J Simon, Anna Furches, Hari Chhetri, Luke Evans, Chanaka Roshan Abeyratne, Piet Jones, Gina Wimp, David Macaya-Sanz, Daniel Jacobson, Timothy J Tschaplinski, Gerald A Tuskan, Stephen P DiFazio
Community genetics seeks to understand the mechanisms by which natural genetic variation in heritable host phenotypes can encompass assemblages of organisms such as bacteria, fungi, and many animals including arthropods. Prior studies that focused on plant genotypes have been unable to identify genes controlling community composition, a necessary step to predict ecosystem structure and function as underlying genes shift within plant populations. We surveyed arthropods within an association population of Populus trichocarpa in three common gardens to discover plant genes that contributed to arthropod community composition...
March 15, 2024: New Phytologist
https://read.qxmd.com/read/38488261/convergently-evolved-metabolites-are-new-to-me-but-not-to-my-attackers
#35
JOURNAL ARTICLE
Amanda Agosto-Ramos, Anna Jo Muhich, Daniel J Kliebenstein
No abstract text is available yet for this article.
March 15, 2024: New Phytologist
https://read.qxmd.com/read/38488247/ontogenetic-trajectories-as-the-target-of-selection
#36
JOURNAL ARTICLE
Mark E Olson
No abstract text is available yet for this article.
March 15, 2024: New Phytologist
https://read.qxmd.com/read/38488228/contrasting-coordination-of-non-structural-carbohydrates-with-leaf-and-root-economic-strategies-of-alpine-coniferous-forests
#37
JOURNAL ARTICLE
Peipei Zhang, Junxiang Ding, Qitong Wang, Nate G McDowell, Deliang Kong, Yindong Tong, Huajun Yin
Non-structural carbohydrates (NSCs), as the labile fraction and dominant carbon currency, are essential mediators of plant adaptation to environments. However, whether and how NSC coordinates with plant economic strategy frameworks, particularly the well-recognized leaf economics spectrums (LES) and root economics space (RES), remains unclear. We examined the relationships between NSC and key plant economics traits in leaves and fine roots across 90 alpine coniferous populations on the Tibetan Plateau, China...
March 15, 2024: New Phytologist
https://read.qxmd.com/read/38482720/spectral-ecophysiology-hyperspectral-pressure-volume-curves-to-estimate-leaf-turgor-loss
#38
JOURNAL ARTICLE
Raiza Castillo-Argaez, Gerard Sapes, Nicole Mallen, Alston Lippert, Grace P John, Alina Zare, William M Hammond
Turgor loss point (TLP) is an important proxy for plant drought tolerance, species habitat suitability, and drought-induced plant mortality risk. Thus, TLP serves as a critical tool for evaluating climate change impacts on plants, making it imperative to develop high-throughput and in situ methods to measure TLP. We developed hyperspectral pressure-volume curves (PV curves) to estimate TLP using leaf spectral reflectance. We used partial least square regression models to estimate water potential (Ψ) and relative water content (RWC) for two species, Frangula caroliniana and Magnolia grandiflora...
March 14, 2024: New Phytologist
https://read.qxmd.com/read/38482697/hybrid-mimulus-flowers-attract-a-new-pollinator
#39
JOURNAL ARTICLE
Foen Peng, Xiaohe Sun, Claudia van Vloten, Jude Correll, Marlena Langdon, Weerin Ngochanthra, Karl Johnson, Suzanne Amador Kane
Hybridization is common in flowering plants and is believed to be an important force driving adaptation and speciation. The flowers of hybrids often exhibit new trait combinations, which, theoretically, could attract new species of pollinators. In this study, we found that the hybrids between a hummingbird-pollinated species Mimulus cardinalis and a self-pollinated species Mimulus parishii attract bumblebees (Bombus impatiens), a pollinator not attracted to either of the progenitor species. This novel attraction is explained by new combinations of floral traits in hybrids, including, most importantly, petal color, in addition to nectar concentration and corolla size...
March 14, 2024: New Phytologist
https://read.qxmd.com/read/38482565/seasonal-drought-promotes-citrate-accumulation-in-citrus-fruit-through-the-csabf3-activated-csan1-csph8-pathway
#40
JOURNAL ARTICLE
Xiaochuan Ma, Ling Sheng, Feifei Li, Tie Zhou, Jing Guo, Yuanyuan Chang, Junfeng Yang, Yan Jin, Yuewen Chen, Xiaopeng Lu
Plenty of rainfall but unevenly seasonal distribution happens regularly in southern China. Seasonal drought from summer to early autumn leads to citrus fruit acidification, but how seasonal drought regulates citrate accumulation remains unknown. Herein, we employed a set of physiological, biochemical, and molecular approaches to reveal that CsABF3 responds to seasonal drought stress and modulates citrate accumulation in citrus fruits by directly regulating CsAN1 and CsPH8. Here, we demonstrated that irreversible acidification of citrus fruits is caused by drought lasting for > 30 d during the fruit enlargement stage...
March 14, 2024: New Phytologist
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