The circadian clock controls temporal and spatial patterns of floral development in sunflower DOI Creative Commons
Carine M. Marshall, Veronica Thompson, Nicky M. Creux

и другие.

eLife, Год журнала: 2023, Номер 12

Опубликована: Янв. 13, 2023

Biological rhythms are ubiquitous. They can be generated by circadian oscillators, which produce daily in physiology and behavior, as well developmental oscillators such the segmentation clock, periodically produces modular units. Here, we show that clock controls timing of late-stage floret development, or anthesis, domesticated sunflowers. In these plants, up to thousands individual florets tightly packed onto a capitulum disk. While early development occurs continuously across capitula generate iconic spiral phyllotaxy, during anthesis discrete ring-like pseudowhorls with hundreds undergoing simultaneous maturation. We demonstrate regulation floral organ growth effects light on this process time-of-day dependent. Delays phase delay morning visits pollinators, while disruption causes loss pseudowhorl formation large reductions pollinator visits. therefore sunflower acts concert environmental response pathways synchronize each day, generating spatial patterns developing This coordinated mass release rewards at predictable times day likely promotes plant reproductive success.

Язык: Английский

Genetic regulation of lateral root development DOI Creative Commons
Ying Zhang, Yuru Ma,

Dan Zhao

и другие.

Plant Signaling & Behavior, Год журнала: 2022, Номер 18(1)

Опубликована: Июнь 1, 2022

Lateral roots (LRs) are an important part of plant root systems. In dicots, for example, after plants adapted from aquatic to terrestrial environments, filamentous pseudorhizae evolved allow nutrient absorption. A typical system comprises a primary root, LRs, hairs, and cap. Classical exhibit geotropism (the tendency grow downward into the ground) can synthesize hormones other essential substances. Root vascular bundles complex spatial structures enable absorb water nutrients meet their quotas grow. The carries out most functions during early growth stages but is later overtaken by underscoring importance LR development mineral uptake soil fixation capacity root. modulated endogenous external environmental factors, its underlying mechanisms have been dissected in great detail Arabidopsis, thanks simple anatomy ease obtaining mutants. This review comprehensively systematically summarizes past research (largely Arabidopsis) on basic structure, stages, molecular regulated different as well future prospects research, provide broad background knowledge researchers.

Язык: Английский

Процитировано

20
Lateral root branching: evolutionary innovations and mechanistic divergence in land plants DOI Open Access
Harshita Singh,

Zeenu Singh,

Rohan Kashyap

и другие.

New Phytologist, Год журнала: 2023, Номер 238(4), С. 1379 - 1385

Опубликована: Март 8, 2023

The root system architecture in plants is a result of multiple evolutionary innovations over time response to changing environmental cues. Dichotomy and endogenous lateral branching the roots evolved lycophytes lineage but extant seed use instead. This has led development complex adaptive systems, with playing key role this process exhibiting conserved divergent features different plant species. study diverse species can shed light on orderly yet distinct nature postembryonic organogenesis plants. insight provides an overview diversity (LR) various during evolution

Язык: Английский

Процитировано

13
ERF1 inhibits lateral root emergence by promoting local auxin accumulation and repressing ARF7 expression DOI Creative Commons
Ping‐Xia Zhao, Jing Zhang, Siyan Chen

и другие.

Cell Reports, Год журнала: 2023, Номер 42(6), С. 112565 - 112565

Опубликована: Май 23, 2023

Lateral roots (LRs) are crucial for plants to sense environmental signals in addition water and nutrient absorption. Auxin is key LR formation, but the underlying mechanisms not fully understood. Here, we report that Arabidopsis ERF1 inhibits emergence by promoting local auxin accumulation with altered distribution regulating signaling. Loss of increases density compared wild type, whereas overexpression causes opposite phenotype. enhances transport upregulating PIN1 AUX1, resulting excessive endodermal, cortical, epidermal cells surrounding primordia. Furthermore, represses ARF7 transcription, thereby downregulating expression cell-wall remodeling genes facilitate emergence. Together, our study reveals integrates promote repress ARF7, consequently inhibiting adaptation fluctuating environments.

Язык: Английский

Процитировано

13
GH3‐mediated auxin inactivation attenuates multiple stages of lateral root development DOI
Wang Qing, Hugues De Gernier, Xingliang Duan

и другие.

New Phytologist, Год журнала: 2023, Номер 240(5), С. 1900 - 1912

Опубликована: Сен. 25, 2023

Lateral root (LR) positioning and development rely on the dynamic interplay between auxin production, transport but also inactivation. Nonetheless, how latter affects LR organogenesis remains largely uninvestigated. Here, we systematically analyze impact of major inactivation pathway defined by GRETCHEN HAGEN3-type (GH3) conjugating enzymes DIOXYGENASE FOR AUXIN OXIDATION1 (DAO1) in all stages using reporters, genetics inhibitors Arabidopsis thaliana. Our data demonstrate that gh3.1/2/3/4/5/6 hextuple (gh3hex) mutants display a higher density due to increased initiation faster developmental progression, acting epistatically over dao1-1. Grafting local inhibitor applications reveal shoot GH3 activities control formation. The gh3hex is associated with expression domains around developing LRs. increase accelerated response oscillations coinciding increases apical meristem size cap cell death rates. research reveals GH3-mediated attenuates development. Local primordia emergence, whereas effects pre-initiation are indirect, modulating turn coordinate growth spacing.

Язык: Английский

Процитировано

13
The circadian clock controls temporal and spatial patterns of floral development in sunflower DOI Creative Commons
Carine M. Marshall, Veronica Thompson, Nicky M. Creux

и другие.

eLife, Год журнала: 2023, Номер 12

Опубликована: Янв. 13, 2023

Biological rhythms are ubiquitous. They can be generated by circadian oscillators, which produce daily in physiology and behavior, as well developmental oscillators such the segmentation clock, periodically produces modular units. Here, we show that clock controls timing of late-stage floret development, or anthesis, domesticated sunflowers. In these plants, up to thousands individual florets tightly packed onto a capitulum disk. While early development occurs continuously across capitula generate iconic spiral phyllotaxy, during anthesis discrete ring-like pseudowhorls with hundreds undergoing simultaneous maturation. We demonstrate regulation floral organ growth effects light on this process time-of-day dependent. Delays phase delay morning visits pollinators, while disruption causes loss pseudowhorl formation large reductions pollinator visits. therefore sunflower acts concert environmental response pathways synchronize each day, generating spatial patterns developing This coordinated mass release rewards at predictable times day likely promotes plant reproductive success.

Язык: Английский

Процитировано

12