FINE CULM1 Encoding a TEOSINTE BRANCHED1-like TCP Transcription Factor Negatively Regulates Axillary Meristem Formation in Rice DOI
Wakana Tanaka,

Ami Ohyama,

Taiyo Toriba

et al.

Plant and Cell Physiology, Journal Year: 2024, Volume and Issue: 65(11), P. 1862 - 1872

Published: Sept. 21, 2024

Shoot branching is a critical determinant of plant architecture and key factor affecting crop yield. The shoot involves two main processes: axillary meristem formation subsequent bud outgrowth. While considerable progress has been made in elucidating the genetic mechanisms underlying latter process, our understanding former process remains limited. Rice FINE CULM1 (FC1), which an ortholog teosinte branched1 maize (Zea mays) BRANCHED1/2 Arabidopsis (Arabidopsis thaliana), known to act by repressing In this study, we found that FC1 also plays role i.e. formation, rice. This study was triggered unexpected observation fc1 mutation suppresses loss meristems loss-of-function mutant rice WUSCHEL gene TILLERS ABSENT1 (TAB1). tab1 fc1, unlike tab1, both stem cells undifferentiated were maintained during similar wild type. Morphological analysis showed accelerated compared Consistent with this, cell proliferation more active region containing than Taken altogether, these findings suggest negatively regulates mildly process.

Language: Английский

YABBY and diverged KNOX1 genes shape nodes and internodes in the stem DOI
Katsutoshi Tsuda, Akiteru Maeno,

Ayako Otake

et al.

Science, Journal Year: 2024, Volume and Issue: 384(6701), P. 1241 - 1247

Published: June 13, 2024

Plant stems comprise nodes and internodes that specialize in solute exchange elongation. However, their boundaries are not well defined, how these basic units arise remains elusive. In rice with clear internodes, we found one subclade of class I

Language: Английский

Citations

12
Crop root system phenotyping with high water-use efficiency and its targeted precision regulation: Present and prospect DOI Creative Commons
Jian Kang, Risheng Ding, Jinliang Chen

et al.

Agricultural Water Management, Journal Year: 2025, Volume and Issue: 309, P. 109327 - 109327

Published: Jan. 29, 2025

Language: Английский

Citations

1
The Function of Florigen in the Vegetative-to-Reproductive Phase Transition in and around the Shoot Apical Meristem DOI Creative Commons
Hiroyuki Tsuji,

Moeko Sato

Plant and Cell Physiology, Journal Year: 2024, Volume and Issue: 65(3), P. 322 - 337

Published: Jan. 5, 2024

Abstract Plants undergo a series of developmental phases throughout their life-cycle, each characterized by specific processes. Three critical features distinguish these phases: the arrangement primordia (phyllotaxis), timing differentiation (plastochron) and characteristics lateral organs axillary meristems. Identifying unique molecular phase, determining triggers that cause transitions understanding mechanisms underlying are keys to gleaning complete plant development. During vegetative shoot apical meristem (SAM) facilitates continuous leaf stem formation, with development as hallmark. The transition reproductive phase induces significant changes in processes, driven mainly protein FT (FLOWERING LOCUS T) Arabidopsis proteins encoded orthologs, which specified ‘florigen’. These synthesized leaves transported SAM, act primary flowering signal, although its impact varies among species. Within florigen integrates other signals, culminating changes. This review explores central question how SAM. Future research may combine studies, potentially revealing florigen-induced

Language: Английский

Citations

6
CDPK5 and CDPK13 play key roles in acclimation to low oxygen through the control of RBOH-mediated ROS production in rice DOI Creative Commons
J Jianqiang Li, Takahiro Ishii, Miki Yoshioka

et al.

PLANT PHYSIOLOGY, Journal Year: 2024, Volume and Issue: unknown

Published: June 7, 2024

CALCIUM-DEPENDENT PROTEIN KINASE (CDPK) stimulates reactive oxygen species (ROS)-dependent signaling by activating RESPIRATORY BURST OXIDASE HOMOLOG (RBOH). The lysigenous aerenchyma is a gas space created cortical cell death that facilitates diffusion from the shoot to root tips. Previously, we showed RBOHH indispensable for induction of formation in rice (Oryza sativa) roots under low-oxygen conditions. Here, CDPK5 and CDPK13 localize plasma membrane where functions. Mutation analysis serine at residues 92 107 revealed these are required CDPK5- CDPK13-mediated activation ROS production. requirement Ca2+ function was confirmed using vitro kinase assays. CRISPR/Cas9-based mutagenesis and/or double knockout almost completely suppressed inducible formation, whereas effects were limited single either or CDPK13. Interestingly, adventitious which widely conserved vascular plants, Our results suggest CDPKs essential acclimation conditions, also many other plant conserving CDPK-targeted phosphorylation sites RBOH homologues.

Language: Английский

Citations

6
Root anatomical plasticity contributes to the different adaptive responses of two Phragmites species to water-deficit and low-oxygen conditions DOI Creative Commons
Takaki Yamauchi,

Kurumi Sumi,

Hiromitsu Morishita

et al.

Functional Plant Biology, Journal Year: 2024, Volume and Issue: 51(4)

Published: March 14, 2024

The runner reed (Phragmites japonica) is the dominant species on riverbanks, whereas common australis) thrives in continuously flooded areas. Here, we aimed to identify key root anatomical traits that determine different adaptative responses of two Phragmites water-deficit and low-oxygen conditions. Growth measurements revealed P. japonica tolerated high osmotic conditions, australis preferred Root analysis ratios cortex stele area aerenchyma (gas space) both increased under However, a higher ratio resulted stele, which includes xylem vessels are essential for water nutrient uptakes. In contrast, lower could be advantageous efficient uptake high-osmotic addition tissue areas, rigid outer apoplastic barriers composed suberised exodermis may contribute adaptation respectively. Our results suggested plasticity plants adapt respond soil moisture levels.

Language: Английский

Citations

3
Application of Open Panicle Traits in Improving the Filling Characteristics at the Base of Indica Rice Panicles DOI Creative Commons

Guotao Yang,

Qin Wang,

Guoxing Yang

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(15), P. 2035 - 2035

Published: July 24, 2024

Panicle-type structure is an important factor affecting rice yield, and excellent panicle type has become a key indicator in breeding. In this study, the

Language: Английский

Citations

3
The WRKY28-BRC1 Transcription Factor Module Controls Shoot Branching in Brassica napus DOI Creative Commons
Ka Zhang, Jinfang Zhang,

Cheng Cui

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(3), P. 486 - 486

Published: Feb. 6, 2025

The trade-off between growth and defense is common in plants. We previously demonstrated that BnaA03.WRKY28 weakened resistance strength but promoted shoot branching Brassica napus (rapeseed). However, the molecular mechanism by which WRKY28 promotes formation still obscure. In this study, we found BnaA01.BRC1, BnaC01.BRC1, BnaC03.BRC1 are mainly expressed leaf axils contained W-box cis-acting elements promoter regions. directly bound to regions of these three copies inhibited their expression. brc1 mutants, BnaC01.BRC1 BnaA03.BRC1 were simultaneously knocked out, mediated CRISPR/Cas9, exhibited excessive branching. expression level ABA biosynthesis encoding gene NCED3 was significantly reduced mutant compared WT. Instead, catabolism CYP707A3 higher than These results suggest may be caused release ABA-mediated bud dormancy. This study provides direct evidence for potential WRKY28-BRC1 transcription factor module contributing rapeseed.

Language: Английский

Citations

0
Unlocking the role of nutrients in the induction of mango flowering DOI

E. Meena,

S. Srividhya,

I. Muthuvel

et al.

Journal of Plant Nutrition, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: Feb. 12, 2025

Language: Английский

Citations

0
Excavation and Functional Verification of Plant Height Gene BnGPI2-A03 in Brassica napus L. DOI Creative Commons
Hailiang Liu, Rui Ren, Wei Liu

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 554 - 554

Published: Feb. 25, 2025

Plant height is an important agronomic trait that affects the establishment of ideal plant type and yield formation rapeseed. However, genetic mechanism affecting has not been fully elucidated. Building on previous genome-wide association studies (GWASs), we performed differential gene expression analysis using 14 shoot apex transcriptome datasets derived from materials exhibiting extreme seedling phenotypes at bud stage. The promoter first exon regions Glycosylphosphatidylinositol 2 (BnGPI2-A03) rapeseed were identified as harboring two significant SNPs (Bn-A03-p717776 Bn-A03-p7178917) associated with height. Co-expression network shows BnGPI2-A03 was many hormone pathway genes, cell wall synthesis transcription factor genes formed a potential regulating To examine function in Brassica napus L., generated transgenic plants which overexpressed 35 s promoter. Overexpression elevated main inflorescence length by average 17.95% 25.92%, respectively, showed positive relationship level BnGPI2-A03. Transcriptome sequencing stem-tip tissue during stage division pathways. requirement for further evidenced natural germplasms higher levels extremely high genotypes (Hap1) relative to their ultra-short counterparts (Hap3). These discoveries highlight targets improvement future.

Language: Английский

Citations

0
Developmental Dynamics of Intercalary Meristem and Pith Cavity in Rice Stems DOI Creative Commons
Keisuke Nagai,

Yoko Niimi,

Misaki Ohsato

et al.

Rice, Journal Year: 2025, Volume and Issue: 18(1)

Published: March 18, 2025

In rice, internode elongation is a critical aspect of plant development and agricultural productivity. Previous morphological histochemical studies using [3H]thymidine have visualized the cell division zone (intercalary meristem) in internodes. However, it has remained unclear how intercalary meristem forms during stem development. addition, while pith cavity central part rice stem, spatiotemporal relationship between formation not well understood. Therefore, we performed histological analysis C9285, deepwater variety that shows from vegetative growth stage. We classified developmental stages into four based on Trypan blue, Calcein-AM, MitoRed staining, dividing cells Click-iT EdU imaging assay. Stage 1, no was formed. Vertical rows were observed above axillary bud attachment upper node, suggesting anticlinal divisions lead to early stage 2, first formed foot, which region attachment. Compared internode, foot significantly activated resulting slight 1 2. 3, ceased, active at base led significant vertical elongation. The second due death internode. 4, two cavities connected form single large cavity. Although maintained activity, number decreased. Based these results, propose model for involves phases regulation: primary involving secondary activation meristem. This study anatomically elucidate It provides new insights future research other grass species.

Language: Английский

Citations

0