journal
https://read.qxmd.com/read/38532564/lore-receptor-homomerization-is-required-for-3-hydroxydecanoic-acid-induced-immune-signaling-and-determines-the-natural-variation-of-immunosensitivity-within-the-arabidopsis-genus
#1
JOURNAL ARTICLE
Sabine Eschrig, Milena Schäffer, Lin-Jie Shu, Tina Illig, Sonja Eibel, Atiara Fernandez, Stefanie Ranf
The S-domain-type receptor-like kinase (SD-RLK) LIPOOLIGOSACCHARIDE-SPECIFIC REDUCED ELICITATION (LORE) from Arabidopsis thaliana is a pattern recognition receptor that senses medium-chain 3-hydroxy fatty acids, such as 3-hydroxydecanoic acid (3-OH-C10:0), to activate pattern-triggered immunity. Here, we show that LORE homomerization is required to activate 3-OH-C10:0-induced immune signaling. Fluorescence lifetime imaging in Nicotiana benthamiana demonstrates that AtLORE homomerizes via the extracellular and transmembrane domains...
March 26, 2024: New Phytologist
https://read.qxmd.com/read/38532557/a-phosphatase-gene-is-linked-to-nectar-dihydroxyacetone-accumulation-in-m%C3%A4-nuka-leptospermum-scoparium
#2
JOURNAL ARTICLE
Ella R P Grierson, Amali H Thrimawithana, John W van Klink, David H Lewis, Ignacio Carvajal, Jason Shiller, Poppy Miller, Simon C Deroles, Michael J Clearwater, Kevin M Davies, David Chagné, Kathy E Schwinn
Floral nectar composition beyond common sugars shows great diversity but contributing genetic factors are generally unknown. Mānuka (Leptospermum scoparium) is renowned for the antimicrobial compound methylglyoxal in its derived honey, which originates from the precursor, dihydroxyacetone (DHA), accumulating in the nectar. Although this nectar trait is highly variable, genetic contribution to the trait is unclear. Therefore, we investigated key gene(s) and genomic regions underpinning this trait. We used RNAseq analysis to identify nectary-associated genes differentially expressed between high and low nectar DHA genotypes...
March 26, 2024: New Phytologist
https://read.qxmd.com/read/38532535/variation-in-leaf-carbon-economics-energy-balance-and-heat-tolerance-traits-highlights-differing-timescales-of-adaptation-and-acclimation
#3
JOURNAL ARTICLE
Nicole N Bison, Sean T Michaletz
Multivariate leaf trait correlations are hypothesized to originate from natural selection on carbon economics traits that control lifetime leaf carbon gain, and energy balance traits governing leaf temperatures, physiological rates, and heat injury. However, it is unclear whether macroevolution of leaf traits primarily reflects selection for lifetime carbon gain or energy balance, and whether photosynthetic heat tolerance is coordinated along these axes. To evaluate these hypotheses, we measured carbon economics, energy balance, and photosynthetic heat tolerance traits for 177 species (157 families) in a common garden that minimizes co-variation of taxa and climate...
March 26, 2024: New Phytologist
https://read.qxmd.com/read/38531810/incorporating-plant-phenological-responses-into-species-distribution-models-reduces-estimates-of-future-species-loss-and-turnover
#4
JOURNAL ARTICLE
Shijia Peng, Tadeo H Ramirez-Parada, Susan J Mazer, Sydne Record, Isaac Park, Aaron M Ellison, Charles C Davis
Anthropogenetic climate change has caused range shifts among many species. Species distribution models (SDMs) are used to predict how species ranges may change in the future. However, most SDMs rarely consider how climate-sensitive traits, such as phenology, which affect individuals' demography and fitness, may influence species' ranges. Using > 120 000 herbarium specimens representing 360 plant species distributed across the eastern United States, we developed a novel 'phenology-informed' SDM that integrates phenological responses to changing climates...
March 26, 2024: New Phytologist
https://read.qxmd.com/read/38523559/diverse-inositol-phosphorylceramide-synthase-mutant-alleles-of-physcomitrium-patens-offer-new-insight-into-complex-sphingolipid-metabolism
#5
JOURNAL ARTICLE
Tegan M Haslam, Cornelia Herrfurth, Ivo Feussner
Sphingolipids are widespread, abundant, and essential lipids in plants and in other eukaryotes. Glycosyl inositol phosphorylceramides (GIPCs) are the most abundant class of plant sphingolipids, and are enriched in the plasma membrane of plant cells. They have been difficult to study due to lethal or pleiotropic mutant phenotypes. To overcome this, we developed a CRISPR/Cas9-based method for generating multiple and varied knockdown and knockout populations of mutants in a given gene of interest in the model moss Physcomitrium patens...
March 25, 2024: New Phytologist
https://read.qxmd.com/read/38523243/insights-into-the-molecular-regulation-of-source-sink-relations-in-potato
#6
JOURNAL ARTICLE
Helen H Tai
No abstract text is available yet for this article.
March 24, 2024: New Phytologist
https://read.qxmd.com/read/38523242/dof1-7-and-nigt1-transcription-factors-mediate-multilayered-transcriptional-regulation-for-different-expression-patterns-of-nitrate-transporter2-genes-under-nitrogen-deficiency-stress
#7
JOURNAL ARTICLE
Mengna Zhuo, Yasuhito Sakuraba, Shuichi Yanagisawa
Elucidating the mechanisms regulating nitrogen (N) deficiency responses in plants is of great agricultural importance. Previous studies revealed that decreased expression of NITRATE-INDUCIBLE GARP-TYPE TRANSCRIPTIONAL REPRESSOR1 (NIGT1) transcriptional repressor genes upon N deficiency is involved in N deficiency-inducible gene expression in Arabidopsis thaliana. However, our knowledge of the mechanisms controlling N deficiency-induced changes in gene expression is still limited. Through the identification of Dof1...
March 24, 2024: New Phytologist
https://read.qxmd.com/read/38523234/the-transcription-factor-bzip44-cooperates-with-myb10-and-myb72-to-regulate-the-response-of-arabidopsis-thaliana-to-iron-deficiency-stress
#8
JOURNAL ARTICLE
Xi Wu, Yafeng Jia, Qian Ma, Tingting Wang, Jiena Xu, Hongli Chen, Mingxia Wang, Hui Song, Shuqing Cao
Nicotianamine (NA) plays a crucial role in transporting metal ions, including iron (Fe), in plants; therefore, NICOTIANAMINE SYNTHASE (NAS) genes, which control NA synthesis, are tightly regulated at the transcriptional level. However, the transcriptional regulatory mechanisms of NAS genes require further investigations. In this study, we determined the role of bZIP44 in mediating plant response to Fe deficiency stress by conducting transformation experiments and assays. bZIP44 positively regulated the response of Arabidopsis to Fe deficiency stress by interacting with MYB10 and MYB72 to enhance their abilities to bind at NAS2 and NAS4 promoters, thereby increasing NAS2 and NAS4 transcriptional levels and promote NA synthesis...
March 24, 2024: New Phytologist
https://read.qxmd.com/read/38520184/the-enigma-of-genetic-adaptation-in-a-panmictic-pine
#9
JOURNAL ARTICLE
Karl J Duffy
No abstract text is available yet for this article.
March 23, 2024: New Phytologist
https://read.qxmd.com/read/38519445/the-gw5-wrky53-sgw5-module-regulates-grain-size-variation-in-rice
#10
JOURNAL ARTICLE
Waseem Abbas, Abdullah Shalmani, Jian Zhang, Qi Sun, Chunyu Zhang, Wei Li, Yana Cui, Meng Xiong, Yibo Li
Grain size is a crucial agronomic trait that affects stable yield, appearance, milling quality, and domestication in rice. However, the molecular and genetic relationships among QTL genes (QTGs) underlying natural variation for grain size remain elusive. Here, we identified a novel QTG SGW5 (suppressor of gw5) by map-based cloning using an F2 segregation population by fixing same genotype of the master QTG GW5. SGW5 positively regulates grain width by influencing cell division and cell size in spikelet hulls...
March 22, 2024: New Phytologist
https://read.qxmd.com/read/38515267/co-opted-cytosolic-proteins-form-condensate-substructures-within-membranous-replication-organelles-of-a-positive-strand-rna-virus
#11
JOURNAL ARTICLE
Wenwu Lin, Peter D Nagy
Positive-strand RNA viruses co-opt organellar membranes for biogenesis of viral replication organelles (VROs). Tombusviruses also co-opt pro-viral cytosolic proteins to VROs. It is currently not known what type of molecular organization keeps co-opted proteins sequestered within membranous VROs. In this study, we employed tomato bushy stunt virus (TBSV) and carnation Italian ringspot virus (CIRV) - Nicotiana benthamiana pathosystems to identify biomolecular condensate formation in VROs. We show that TBSV p33 and the CIRV p36 replication proteins sequester glycolytic and fermentation enzymes in unique condensate substructures associated with membranous VROs...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515251/the-mir6445-nac029-module-regulates-drought-tolerance-by-regulating-the-expression-of-glutathione-s-transferase-u23-and-reactive-oxygen-species-scavenging-in-populus
#12
JOURNAL ARTICLE
Meng-Xue Niu, Cong-Hua Feng, Fang He, Han Zhang, Yu Bao, Shu-Jing Liu, Xiao Liu, Yanyan Su, Chao Liu, Hou-Ling Wang, Weilun Yin, Xinli Xia
MicroRNAs are essential in plant development and stress resistance, but their specific roles in drought stress require further investigation. Here, we have uncovered that a Populus-specific microRNAs (miRNA), miR6445, targeting NAC (NAM, ATAF, and CUC) family genes, is involved in regulating drought tolerance of poplar. The expression level of miR6445 was significantly upregulated under drought stress; concomitantly, seven targeted NAC genes showed significant downregulation. Silencing the expression of miR6445 by short tandem target mimic technology significantly decreased the drought tolerance in poplar...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515249/a-wri1-dependent-module-is-essential-for-the-accumulation-of-auxin-and-lipid-in-somatic-embryogenesis-of-arabidopsis-thaliana
#13
JOURNAL ARTICLE
Wen Jie Zhang, Li Ping Tang, Jing Peng, Li Ming Zhai, Qiu Li Ma, Xian Sheng Zhang, Ying Hua Su
The potential for totipotency exists in all plant cells; however, the underlying mechanisms remain largely unknown. Earlier findings have revealed that the overexpression of LEAFY COTYLEDON 2 (LEC2) can directly trigger the formation of somatic embryos on the cotyledons of Arabidopsis. Furthermore, cotyledon cells that overexpress LEC2 accumulate significant lipid reserves typically found in seeds. The precise mechanisms and functions governing lipid accumulation in this process remain unexplored. In this study, we demonstrate that WRINKLED1 (WRI1), the key regulator of lipid biosynthesis, is essential for somatic embryo formation, suggesting that WRI1-mediated lipid biosynthesis plays a crucial role in the transition from vegetative to embryonic development...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515244/genomic-basis-of-the-distinct-biosynthesis-of-%C3%AE-glucogallin-a%C3%A2-biochemical-marker-for-hydrolyzable-tannin-production-in%C3%A2-three-oak-species
#14
JOURNAL ARTICLE
Qinsong Yang, Jinjin Li, Yan Wang, Zefu Wang, Ziqi Pei, Nathaniel R Street, Rishikesh P Bhalerao, Zhaowei Yu, Yuhao Gao, Junbei Ni, Yang Jiao, Minghui Sun, Xiong Yang, Yixin Chen, Puyuan Liu, Jiaxi Wang, Yong Liu, Guolei Li
Hydrolyzable tannins (HTs), predominant polyphenols in oaks, are widely used in grape wine aging, feed additives, and human healthcare. However, the limited availability of a high-quality reference genome of oaks greatly hampered the recognition of the mechanism of HT biosynthesis. Here, high-quality reference genomes of three Asian oak species (Quercus variabilis, Quercus aliena, and Quercus dentata) that have different HT contents were generated. Multi-omics studies were carried out to identify key genes regulating HT biosynthesis...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515239/responses-of-vascular-plant-fine-roots-and-associated-microbial-communities-to-whole-ecosystem-warming-and-elevated-co-2-in-northern-peatlands
#15
JOURNAL ARTICLE
Katherine Duchesneau, Camille E Defrenne, Caitlin Petro, Avni Malhotra, Jessica A M Moore, Joanne Childs, Paul J Hanson, Colleen M Iversen, Joel E Kostka
Warming and elevated CO2 (eCO2 ) are expected to facilitate vascular plant encroachment in peatlands. The rhizosphere, where microbial activity is fueled by root turnover and exudates, plays a crucial role in biogeochemical cycling, and will likely at least partially dictate the response of the belowground carbon cycle to climate changes. We leveraged the Spruce and Peatland Responses Under Changing Environments (SPRUCE) experiment, to explore the effects of a whole-ecosystem warming gradient (+0°C to 9°C) and eCO2 on vascular plant fine roots and their associated microbes...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515228/evolutionary-radiation-of-the-eurasian-pinus-species-under-pervasive-gene-flow
#16
JOURNAL ARTICLE
Wei Zhao, Jie Gao, David Hall, Bea Angelica Andersson, Jade Bruxaux, Kyle W Tomlinson, Andreas D Drouzas, Yoshihisa Suyama, Xiao-Ru Wang
Evolutionary radiation, a pivotal aspect of macroevolution, offers valuable insights into evolutionary processes. The genus Pinus is the largest genus in conifers with <mml:math xmlns:mml="https://www.w3.org/1998/Math/MathML"> <mml:semantics><mml:mrow><mml:mi>c</mml:mi> <mml:mo>.</mml:mo></mml:mrow> <mml:annotation>$$ c. $$</mml:annotation></mml:semantics> </mml:math> 90% of the extant species emerged in the Miocene, which signifies a case of rapid diversification...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38515227/chloroplast-ion-homeostasis-what-do-we-know-and-where-should-we-go
#17
REVIEW
Hans-Henning Kunz, Ute Armbruster, Susanne Mühlbauer, Jan de Vries, Geoffry A Davis
Plant yields heavily depend on proper macro- and micronutrient supply from the soil. In the leaf cells, nutrient ions fulfill specific roles in biochemical reactions, especially photosynthesis housed in the chloroplast. Here, a well-balanced ion homeostasis is maintained by a number of ion transport proteins embedded in the envelope and thylakoid membranes. Ten years ago, the first alkali metal transporters from the K+ EFFLUX ANTIPORTER family were discovered in the model plant Arabidopsis. Since then, our knowledge about the physiological importance of these carriers and their substrates has greatly expanded...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38513692/integration-of-cell-differentiation-and-initiation-of-monoterpenoid-indole-alkaloid-metabolism-in-seed-germination-of-catharanthus-roseus
#18
JOURNAL ARTICLE
Mai Uzaki, Tetsuya Mori, Mayuko Sato, Mayumi Wakazaki, Noriko Takeda-Kamiya, Kotaro Yamamoto, Akio Murakami, Delia Ayled Serna Guerrero, Chizuko Shichijo, Miwa Ohnishi, Kimitsune Ishizaki, Hidehiro Fukaki, Sarah E O'Connor, Kiminori Toyooka, Tetsuro Mimura, Masami Yokota Hirai
In Catharanthus roseus, monoterpenoid indole alkaloids (MIAs) are produced through the cooperation of four cell types, with final products accumulating in specialized cells known as idioblasts and laticifers. To explore the relationship between cellular differentiation and cell type-specific MIA metabolism, we analyzed the expression of MIA biosynthesis in germinating seeds. Embryos from immature and mature seeds were observed via stereomicroscopy, fluorescence microscopy, and electron microscopy. Time-series MIA and iridoid quantification, along with transcriptome analysis, were conducted to determine the initiation of MIA biosynthesis...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38511255/regulation-of-plant-resistance-to-salt-stress-by-the-snrk1-dependent-splicing-factor-srrm1l
#19
JOURNAL ARTICLE
Qi Sun, Yixin Sun, Xin Liu, Minglong Li, Qiang Li, Jialei Xiao, Pengfei Xu, Shuzhen Zhang, Xiaodong Ding
Most splicing factors are extensively phosphorylated but their physiological functions in plant salt resistance are still elusive. We found that phosphorylation by SnRK1 kinase is essential for SRRM1L nuclear speckle formation and its splicing factor activity in plant cells. In Arabidopsis, loss-of-function of SRRM1L leads to the occurrence of alternative pre-mRNA splicing events and compromises plant resistance to salt stress. In Arabidopsis srrm1l mutant line, we identified an intron-retention Nuclear factor Y subunit A 10 (NFYA10) mRNA variant by RNA-Seq and found phosphorylation-dependent RNA-binding of SRRM1L is indispensable for its alternative splicing activity...
March 21, 2024: New Phytologist
https://read.qxmd.com/read/38511237/temperate-woody-species-across-the-angiosperm-phylogeny-acquire-tolerance-to-water-deficit-stress-during-the-growing-season
#20
JOURNAL ARTICLE
Jake J Grossman, Henry B Coe, Olivia Fey, Natalie Fraser, Musa Salaam, Chelsea Semper, Ceci G Williamson
Understanding the capacity of temperate trees to acclimate to limited soil water has become essential in the face of increasing drought risk due to climate change. We documented seasonal - or phenological - patterns in acclimation to water deficit stress in stems and leaves of tree species spanning the angiosperm phylogeny. Over 3 yr of field observations carried out in two US arboreta, we measured stem vulnerability to embolism (36 individuals of 7 Species) and turgor loss point (119 individuals of 27 species) over the growing season...
March 21, 2024: New Phytologist
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