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Antisense transcription from stress-responsive transcription factors fine-tunes the cold response in Arabidopsis. 应激反应转录因子的反义转录可微调拟南芥的冷反应。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae160
Shiv Kumar Meena, Marti Quevedo, Sarah Muniz Nardeli, Clément Verez, Susheel Sagar Bhat, Vasiliki Zacharaki, Peter Kindgren
{"title":"Antisense transcription from stress-responsive transcription factors fine-tunes the cold response in Arabidopsis.","authors":"Shiv Kumar Meena, Marti Quevedo, Sarah Muniz Nardeli, Clément Verez, Susheel Sagar Bhat, Vasiliki Zacharaki, Peter Kindgren","doi":"10.1093/plcell/koae160","DOIUrl":"10.1093/plcell/koae160","url":null,"abstract":"<p><p>Transcription of antisense long noncoding RNAs (lncRNAs) occurs pervasively across eukaryotic genomes. Only a few antisense lncRNAs have been characterized and shown to control biological processes, albeit with idiosyncratic regulatory mechanisms. Thus, we largely lack knowledge about the general role of antisense transcription in eukaryotic organisms. Here, we characterized genes with antisense transcription initiating close to the poly(A) signal of genes (PAS genes) in Arabidopsis (Arabidopsis thaliana). We compared plant native elongation transcript sequencing (plaNET-seq) with RNA sequencing during short-term cold exposure and detected massive differences between the response in active transcription and steady-state levels of PAS gene-derived mRNAs. The cold-induced expression of transcription factors B-BOX DOMAIN PROTEIN28 (BBX28) and C2H2-TYPE ZINC FINGER FAMILY PROTEIN5 (ZAT5) was detected by plaNET-seq, while their steady-state level was only slightly altered due to high mRNA turnover. Knockdown of BBX28 and ZAT5 or of their respective antisense transcripts severely compromised plant freezing tolerance. Decreased antisense transcript expression levels resulted in a reduced cold response of BBX28 and ZAT5, revealing a positive regulatory role of both antisense transcripts. This study expands the known repertoire of noncoding transcripts. It highlights that native transcription approaches can complement steady-state RNA techniques to identify biologically relevant players in stress responses.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141158769","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
SEPALLATA-driven MADS transcription factor tetramerization is required for inner whorl floral organ development. 内轮花器的发育需要 SEPALLATA 驱动的 MADS 转录因子四聚体。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae151
Veronique Hugouvieux, Romain Blanc-Mathieu, Aline Janeau, Michel Paul, Jeremy Lucas, Xiaocai Xu, Hailong Ye, Xuelei Lai, Sarah Le Hir, Audrey Guillotin, Antonin Galien, Wenhao Yan, Max Nanao, Kerstin Kaufmann, François Parcy, Chloe Zubieta
{"title":"SEPALLATA-driven MADS transcription factor tetramerization is required for inner whorl floral organ development.","authors":"Veronique Hugouvieux, Romain Blanc-Mathieu, Aline Janeau, Michel Paul, Jeremy Lucas, Xiaocai Xu, Hailong Ye, Xuelei Lai, Sarah Le Hir, Audrey Guillotin, Antonin Galien, Wenhao Yan, Max Nanao, Kerstin Kaufmann, François Parcy, Chloe Zubieta","doi":"10.1093/plcell/koae151","DOIUrl":"10.1093/plcell/koae151","url":null,"abstract":"<p><p>MADS transcription factors are master regulators of plant reproduction and flower development. The SEPALLATA (SEP) subfamily of MADS transcription factors is required for the development of floral organs and plays roles in inflorescence architecture and development of the floral meristem. SEPALLATAs act as organizers of MADS complexes, forming both heterodimers and heterotetramers in vitro. To date, the MADS complexes characterized in angiosperm floral organ development contain at least 1 SEPALLATA protein. Whether DNA binding by SEPALLATA-containing dimeric MADS complexes is sufficient for launching floral organ identity programs, however, is not clear as only defects in floral meristem determinacy were observed in tetramerization-impaired SEPALLATA mutant proteins. Here, we used a combination of genome-wide-binding studies, high-resolution structural studies of the SEP3/AGAMOUS (AG) tetramerization domain, structure-based mutagenesis and complementation experiments in Arabidopsis (Arabidopsis thaliana) sep1 sep2 sep3 and sep1 sep2 sep3 ag-4 plants transformed with versions of SEP3 encoding tetramerization mutants. We demonstrate that while SEP3 heterodimers can bind DNA both in vitro and in vivo and recognize the majority of SEP3 wild-type-binding sites genome-wide, tetramerization is required not only for floral meristem determinacy but also for floral organ identity in the second, third, and fourth whorls.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371193/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141069948","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
The calcium-dependent protein kinase CPK16 regulates hypoxia-induced ROS production by phosphorylating the NADPH oxidase RBOHD in Arabidopsis. 钙依赖性蛋白激酶 CPK16 通过磷酸化拟南芥中的 NADPH 氧化酶 RBOHD 来调节缺氧诱导的 ROS 生成。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae153
Wei-Wei Yu, Qin-Fang Chen, Ke Liao, De-Mian Zhou, Yi-Cong Yang, Miao He, Lu-Jun Yu, De-Ying Guo, Shi Xiao, Ruo-Han Xie, Ying Zhou
{"title":"The calcium-dependent protein kinase CPK16 regulates hypoxia-induced ROS production by phosphorylating the NADPH oxidase RBOHD in Arabidopsis.","authors":"Wei-Wei Yu, Qin-Fang Chen, Ke Liao, De-Mian Zhou, Yi-Cong Yang, Miao He, Lu-Jun Yu, De-Ying Guo, Shi Xiao, Ruo-Han Xie, Ying Zhou","doi":"10.1093/plcell/koae153","DOIUrl":"10.1093/plcell/koae153","url":null,"abstract":"<p><p>Reactive oxygen species (ROS) production is a key event in modulating plant responses to hypoxia and post-hypoxia reoxygenation. However, the molecular mechanism by which hypoxia-associated ROS homeostasis is controlled remains largely unknown. Here, we showed that the calcium-dependent protein kinase CPK16 regulates plant hypoxia tolerance by phosphorylating the plasma membrane-anchored NADPH oxidase respiratory burst oxidase homolog D (RBOHD) to regulate ROS production in Arabidopsis (Arabidopsis thaliana). In response to hypoxia or reoxygenation, CPK16 was activated through phosphorylation of its Ser274 residue. The cpk16 knockout mutant displayed enhanced hypoxia tolerance, whereas CPK16-overexpressing (CPK16-OE) lines showed increased sensitivity to hypoxic stress. In agreement with these observations, hypoxia and reoxygenation both induced ROS accumulation in the rosettes of CPK16-OEs more strongly than in the rosettes of the cpk16-1 mutant or the wild type. Moreover, CPK16 interacted with and phosphorylated the N-terminus of RBOHD at 4 serine residues (Ser133, Ser148, Ser163, and Ser347) that were necessary for hypoxia- and reoxygenation-induced ROS accumulation. Furthermore, the hypoxia-tolerant phenotype of cpk16-1 was fully abolished in the cpk16 rbohd double mutant. Thus, we have uncovered a regulatory mechanism by which the CPK16-RBOHD module shapes the ROS production during hypoxia and reoxygenation in Arabidopsis.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141248348","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
Birth and expansion of NRC immune receptors across the largest group of flowering plants. NRC 免疫受体在最大的有花植物群体中的诞生和扩展。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae185
Renuka Kolli
{"title":"Birth and expansion of NRC immune receptors across the largest group of flowering plants.","authors":"Renuka Kolli","doi":"10.1093/plcell/koae185","DOIUrl":"10.1093/plcell/koae185","url":null,"abstract":"","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371172/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141451154","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
Strigolactone-induced degradation of SMXL7 and SMXL8 contributes to gibberellin- and auxin-mediated fiber cell elongation in cotton. 硬脂酸内酯诱导的棉花多腋生长抑制因子2-LIKE7(SMXL7)和SMXL8降解有助于赤霉素和植物生长素介导的纤维细胞伸长。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae212
Yaru Sun, Zailong Tian, Dongyun Zuo, Hailiang Cheng, Qiaolian Wang, Youping Zhang, Limin Lv, Guoli Song
{"title":"Strigolactone-induced degradation of SMXL7 and SMXL8 contributes to gibberellin- and auxin-mediated fiber cell elongation in cotton.","authors":"Yaru Sun, Zailong Tian, Dongyun Zuo, Hailiang Cheng, Qiaolian Wang, Youping Zhang, Limin Lv, Guoli Song","doi":"10.1093/plcell/koae212","DOIUrl":"10.1093/plcell/koae212","url":null,"abstract":"<p><p>Cotton (Gossypium) fiber length, a key trait determining fiber yield and quality, is highly regulated by a class of recently identified phytohormones, strigolactones (SLs). However, the underlying molecular mechanisms of SL signaling involved in fiber cell development are largely unknown. Here, we show that the SL signaling repressors MORE AXILLARY GROWTH2-LIKE7 (GhSMXL7) and GhSMXL8 negatively regulate cotton fiber elongation. Specifically, GhSMXL7 and GhSMXL8 inhibit the polyubiquitination and degradation of the gibberellin (GA)-triggered DELLA protein (GhSLR1). Biochemical analysis revealed that GhSMXL7 and GhSMXL8 physically interact with GhSLR1, which interferes with the association of GhSLR1 with the E3 ligase GA INSENSITIVE2 (GhGID2), leading to the repression of GA signal transduction. GhSMXL7 also interacts with the transcription factor GhHOX3, preventing its binding to the promoters of essential fiber elongation regulatory genes. Moreover, both GhSMXL7 and GhSMXL8 directly bind to the promoter regions of the AUXIN RESPONSE FACTOR (ARF) genes GhARF18-10A, GhARF18-10D, and GhARF19-7D to suppress their expression. Cotton plants in which GhARF18-10A, GhARF18-10D, and GhARF19-7D transcript levels had been reduced by virus-induced gene silencing (VIGS) displayed reduced fiber length compared with control plants. Collectively, our findings reveal a mechanism illustrating how SL integrates GA and auxin signaling to coordinately regulate plant cell elongation at the single-cell level.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141752392","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
Multi-transcriptomics identifies targets of the endoribonuclease DNE1 and highlights its coordination with decapping. 多转录组学确定了内切核酸酶 DNE1 的靶标,并强调了它与解旋的协调作用。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae175
Aude Pouclet, David Pflieger, Rémy Merret, Marie-Christine Carpentier, Marlene Schiaffini, Hélène Zuber, Dominique Gagliardi, Damien Garcia
{"title":"Multi-transcriptomics identifies targets of the endoribonuclease DNE1 and highlights its coordination with decapping.","authors":"Aude Pouclet, David Pflieger, Rémy Merret, Marie-Christine Carpentier, Marlene Schiaffini, Hélène Zuber, Dominique Gagliardi, Damien Garcia","doi":"10.1093/plcell/koae175","DOIUrl":"10.1093/plcell/koae175","url":null,"abstract":"<p><p>Decapping is a crucial step in mRNA degradation in eucaryotes and requires the formation of a holoenzyme complex between the decapping enzyme DECAPPING 2 (DCP2) and the decapping enhancer DCP1. In Arabidopsis (Arabidopsis thaliana), DCP1-ASSOCIATED NYN ENDORIBONUCLEASE 1 (DNE1) is a direct protein partner of DCP1. The function of both DNE1 and decapping is necessary to maintain phyllotaxis, the regularity of organ emergence in the apex. In this study, we combined in vivo mRNA editing, RNA degradome sequencing, transcriptomics, and small RNA-omics to identify targets of DNE1 and study how DNE1 and DCP2 cooperate in controlling mRNA fate. Our data reveal that DNE1 mainly contacts and cleaves mRNAs in the coding sequence and has sequence cleavage preferences. DNE1 targets are also degraded through decapping, and both RNA degradation pathways influence the production of mRNA-derived small interfering RNAs. Finally, we detected mRNA features enriched in DNE1 targets including RNA G-quadruplexes and translated upstream open reading frames. Combining these four complementary high-throughput sequencing strategies greatly expands the range of DNE1 targets and allowed us to build a conceptual framework describing the influence of DNE1 and decapping on mRNA fate. These data will be crucial to unveil the specificity of DNE1 action and understand its importance for developmental patterning.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371186/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141311414","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
Transcription factors BZR1 and PAP1 cooperate to promote anthocyanin biosynthesis in Arabidopsis shoots. 转录因子 BZR1 和 PAP1 合作促进拟南芥芽中花青素的生物合成。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae172
Se-Hwa Lee, So-Hee Kim, Tae-Ki Park, Young-Pil Kim, Jin-Won Lee, Tae-Wuk Kim
{"title":"Transcription factors BZR1 and PAP1 cooperate to promote anthocyanin biosynthesis in Arabidopsis shoots.","authors":"Se-Hwa Lee, So-Hee Kim, Tae-Ki Park, Young-Pil Kim, Jin-Won Lee, Tae-Wuk Kim","doi":"10.1093/plcell/koae172","DOIUrl":"10.1093/plcell/koae172","url":null,"abstract":"<p><p>Anthocyanins play critical roles in protecting plant tissues against diverse stresses. The complicated regulatory networks induced by various environmental factors modulate the homeostatic level of anthocyanins. Here, we show that anthocyanin accumulation is induced by brassinosteroids (BRs) in Arabidopsis (Arabidopsis thaliana) shoots and shed light on the underlying regulatory mechanism. We observed that anthocyanin levels are altered considerably in BR-related mutants, and BRs induce anthocyanin accumulation by upregulating the expression of anthocyanin biosynthetic genes. Our genetic analysis indicated that BRASSINAZOLE RESISTANT 1 (BZR1) and PRODUCTION OF ANTHOCYANIN PIGMENT 1 (PAP1) are essential for BR-induced anthocyanin accumulation. The BR-responsive transcription factor BZR1 directly binds to the PAP1 promoter, regulating its expression. In addition, we found that intense anthocyanin accumulation caused by the pap1-D-dominant mutation is significantly reduced in BR mutants, implying that BR activity is required for PAP1 function after PAP1 transcription. Moreover, we demonstrated that BZR1 physically interacts with PAP1 to cooperatively regulate the expression of PAP1-target genes, such as TRANSPARENT TESTA 8, DIHYDROFLAVONOL 4-REDUCTASE, and LEUKOANTHOCYANIDIN DIOXYGENASE. Our findings indicate that BZR1 functions as an integral component of the PAP1-containing transcription factor complex, contributing to increased anthocyanin biosynthesis. Notably, we also show that functional interaction of BZR1 with PAP1 is required for anthocyanin accumulation induced by low nitrogen stress. Taken together, our results demonstrate that BR-regulated BZR1 promotes anthocyanin biosynthesis through cooperative interaction with PAP1 of the MBW complex.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371145/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141311427","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
Molecular mechanisms underlying gene regulatory variation of maize metabolic traits. 玉米代谢性状基因调控变异的分子机制。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae180
Yi-Hsuan Chu, Yun Sun Lee, Fabio Gomez-Cano, Lina Gomez-Cano, Peng Zhou, Andrea I Doseff, Nathan Springer, Erich Grotewold
{"title":"Molecular mechanisms underlying gene regulatory variation of maize metabolic traits.","authors":"Yi-Hsuan Chu, Yun Sun Lee, Fabio Gomez-Cano, Lina Gomez-Cano, Peng Zhou, Andrea I Doseff, Nathan Springer, Erich Grotewold","doi":"10.1093/plcell/koae180","DOIUrl":"10.1093/plcell/koae180","url":null,"abstract":"<p><p>Variation in gene expression levels is pervasive among individuals and races or varieties, and has substantial agronomic consequences, for example, by contributing to hybrid vigor. Gene expression level variation results from mutations in regulatory sequences (cis) and/or transcription factor (TF) activity (trans), but the mechanisms underlying cis- and/or trans-regulatory variation of complex phenotypes remain largely unknown. Here, we investigated gene expression variation mechanisms underlying the differential accumulation of the insecticidal compounds maysin and chlorogenic acid in silks of widely used maize (Zea mays) inbreds, B73 and A632. By combining transcriptomics and cistromics, we identified 1,338 silk direct targets of the maize R2R3-MYB TF Pericarp color1 (P1), consistent with it being a regulator of maysin and chlorogenic acid biosynthesis. Among these P1 targets, 464 showed allele-specific expression (ASE) between B73 and A632 silks. Allelic DNA-affinity purification sequencing identified 34 examples in which P1 allelic specific binding (ASB) correlated with cis-expression variation. From previous yeast one-hybrid studies, we identified 9 TFs potentially implicated in the control of P1 targets, with ASB to 83 out of 464 ASE genes (cis) and differential expression of 4 out of 9 TFs between B73 and A632 silks (trans). These results provide a molecular framework for understanding universal mechanisms underlying natural variation of gene expression levels, and how the regulation of metabolic diversity is established.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371180/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141451155","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
NRC Immune receptor networks show diversified hierarchical genetic architecture across plant lineages. NRC 免疫受体网络在不同植物品系中显示出多样化的分层遗传结构。
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae179
Foong-Jing Goh, Ching-Yi Huang, Lida Derevnina, Chih-Hang Wu
{"title":"NRC Immune receptor networks show diversified hierarchical genetic architecture across plant lineages.","authors":"Foong-Jing Goh, Ching-Yi Huang, Lida Derevnina, Chih-Hang Wu","doi":"10.1093/plcell/koae179","DOIUrl":"10.1093/plcell/koae179","url":null,"abstract":"<p><p>Plants' complex immune systems include nucleotide-binding domain and leucine-rich repeat-containing (NLR) proteins, which help recognize invading pathogens. In solanaceous plants, the NRC (NLR required for cell death) family includes helper NLRs that form a complex genetic network with multiple sensor NLRs to provide resistance against pathogens. However, the evolution and function of NRC networks outside solanaceous plants are currently unclear. Here, we conducted phylogenomic and macroevolutionary analyses comparing NLRs identified from different asterid lineages and found that NRC networks expanded significantly in most lamiids but not in Ericales and campanulids. Using transient expression assays in Nicotiana benthamiana, we showed that NRC networks are simple in Ericales and campanulids, but have high complexity in lamiids. Phylogenetic analyses grouped the NRC helper NLRs into three NRC0 subclades that are conserved, and several family-specific NRC subclades of lamiids that show signatures of diversifying selection. Functional analyses revealed that members of the NRC0 subclades are partially interchangeable, whereas family-specific NRC members in lamiids lack interchangeability. Our findings highlight the distinctive evolutionary patterns of the NRC networks in asterids and provide potential insights into transferring disease resistance across plant lineages.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371147/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141451203","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
Proteolytic control of the RNA silencing machinery. RNA 沉默机制的蛋白水解控制
IF 1 1区 生物学
Plant Cell Pub Date : 2024-09-03 DOI: 10.1093/plcell/koae075
Pascal Genschik, Marlene Schiaffini, Esther Lechner
{"title":"Proteolytic control of the RNA silencing machinery.","authors":"Pascal Genschik, Marlene Schiaffini, Esther Lechner","doi":"10.1093/plcell/koae075","DOIUrl":"10.1093/plcell/koae075","url":null,"abstract":"<p><p>Studies in plants were often pioneering in the field of RNA silencing and revealed a broad range of small RNA (sRNA) categories. When associated with ARGONAUTE (AGO) proteins, sRNAs play important functions in development, genome integrity, stress responses, and antiviral immunity. Today, most of the protein factors required for the biogenesis of sRNA classes, their amplification through the production of double-stranded RNA, and their function in transcriptional and posttranscriptional regulation have been identified. Nevertheless, and despite the importance of RNA silencing, we still know very little about their posttranslational regulation. This is in stark contrast with studies in metazoans, where different modifications such as prolyl hydroxylation, phosphorylation, sumoylation, ubiquitylation, and others have been reported to alter the activity and stability of key factors, such as AGO proteins. Here, we review current knowledge of how key components of the RNA silencing machinery in plants are regulated during development and by microbial hijacking of endogenous proteases.</p>","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":null,"pages":null},"PeriodicalIF":10.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11371168/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140060182","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
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