CLAVATA Signaling Ensures Reproductive Development in Plants across Thermal Environments

Jones, Daniel S.; John, Amala; VanDerMolen, Kylie R.; Nimchuk, Zachary L.

doi:10.1016/j.cub.2020.10.008

Cited by 29 publications

(25 citation statements)

References 81 publications

(96 reference statements)

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“…CLV2/CRN are additive with CLV1/BAM in stem cell regulation and are not required for CLV1/BAM transcriptional compensation 14,22 or CLV1 endomembrane trafficking in response to CLV3p 24 CLV1/BAM ectodomains bind CLE peptides 25–29 , but CLV2 appears to lack CLEp binding capability 30 . CLV2/CRN IM expression differs from CLV1 21,31,32 , with higher levels in developing primordia and OC cells respectively, despite overlap in other IM regions. Additionally, some CLV1/BAM processes outside of shoots do not appear to require CLV2/CRN 25,33 .…”

Section: Mainmentioning

confidence: 88%

A network of CLAVATA receptors buffers auxin-dependent meristem maintenance

John

Smith

Jones

et al. 2022

Preprint

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Plant body plans are elaborated in response to both environmental and endogenous cues. How these inputs intersect to promote growth and development remains poorly understood. During reproductive development, central zone stem cell proliferation in inflorescence meristems is negatively regulated by the CLAVATA3 (CLV3) peptide signaling pathway. In contrast, floral primordia formation on meristem flanks requires the hormone auxin. Here we show that CLV3 signaling is also necessary for auxin-dependent floral primordia generation and that this function is partially masked by both inflorescence fasciation and heat-induced auxin biosynthesis. Stem cell regulation by CLAVATA signaling is separable from primordia formation but is also sensitized to temperature and auxin levels. Additionally, we uncover a novel role for the CLV3 receptor CLAVATA1 in auxin-dependent meristem maintenance in cooler environments. As such, CLV3 signaling buffers multiple auxin-dependent shoot processes across divergent thermal environments with opposing effects on cell proliferation in different meristem regions.

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Section: Mainmentioning

confidence: 88%

A network of CLAVATA receptors buffers auxin-dependent meristem maintenance

John

Smith

Jones

et al. 2022

Preprint

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“…CLAVATA2 (CLV2) and PEPR2 have been suggested to be receptors of the CLE14 peptide signal in this process (Gutierrez-Alanis et al, 2017). CLV2 has been well characterized as a regulator of stem cell homeostasis and meristem development (Guo et al, 2010;Hu et al, 2018) and is also involved in plant response to pathogens and environmental cues (Pan et al, 2016;Jones et al, 2021). Like phytohormones, small peptides can play multiple roles in plant development and stress responses, usually by interacting with different LRR receptor-like kinases (Depuydt et al, 2013;Kang and Hardtke, 2016).…”

Section: Cle14 Suppresses Leaf Senescence Induced By Stress Treatmentsmentioning

confidence: 99%

CLE14 functions as a “brake signal” to suppress age-dependent and stress-induced leaf senescence by promoting JUB1-mediated ROS scavenging in Arabidopsis

Zhang

Liu

et al. 2022

Molecular Plant

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Leaf senescence is an important developmental process in the plant life cycle and has a significant impact on agriculture. When facing harsh environmental conditions, monocarpic plants often initiate early leaf senescence as an adaptive mechanism to ensure a complete life cycle. Upon initiation, the senescence process is fine-tuned through the coordination of both positive and negative regulators. Here, we report that the small secreted peptide CLAVATA3/ESR-RELATED 14 (CLE14) functions in the suppression of leaf senescence by regulating ROS homeostasis in Arabidopsis. Expression of the CLE14-encoding gene in leaves was significantly induced by age, high salinity, abscisic acid (ABA), salicylic acid, and jasmonic acid. CLE14 knockout plants displayed accelerated progression of both natural and salinity-induced leaf senescence, whereas increased CLE14 expression or treatments with synthetic CLE14 peptides delayed senescence. CLE14 peptide treatments also delayed ABA-induced senescence in detached leaves. Further analysis showed that overexpression of CLE14 led to reduced ROS levels in leaves, where higher expression of ROS scavenging genes was detected. Moreover, CLE14 signaling resulted in transcriptional activation of JUB1, a NAC family transcription factor previously identified as a negative regulator of senescence. Notably, the delay of leaf senescence, reduction in H 2O2 level, and activation of ROS scavenging genes by CLE14 peptides were dependent on JUB1. Collectively, these results suggest that the small peptide CLE14 serves as a novel ''brake signal'' to regulate age-dependent and stress-induced leaf senescence through JUB1-mediated ROS scavenging.

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“…In colder/ambient temperatures, CLAVATA (CLV) peptide signaling promotes flower development by stimulating auxin-dependent growth. In contrast, at higher temperatures, YUCCA genes are activated to maintain flower development bypass CLV signaling [ 57 , 58 , 59 ]. There are 15 genes among 63 TaYUCCAs that are induced by drought and heat stress in wheat, though it is unclear whether the expression of these genes is regulated by cold stress.…”

Section: Cold Stress Influences Hormonal Responsesmentioning

confidence: 99%

Genetic Mechanisms of Cold Signaling in Wheat (Triticum aestivum L.)

Liu

Zhang

et al. 2022

Life

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Cold stress is a major environmental factor affecting the growth, development, and productivity of various crop species. With the current trajectory of global climate change, low temperatures are becoming more frequent and can significantly decrease crop yield. Wheat (Triticum aestivum L.) is the first domesticated crop and is the most popular cereal crop in the world. Because of a lack of systematic research on cold signaling pathways and gene regulatory networks, the underlying molecular mechanisms of cold signal transduction in wheat are poorly understood. This study reviews recent progress in wheat, including the ICE-CBF-COR signaling pathway under cold stress and the effects of cold stress on hormonal pathways, reactive oxygen species (ROS), and epigenetic processes and elements. This review also highlights possible strategies for improving cold tolerance in wheat.

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CLAVATA Signaling Ensures Reproductive Development in Plants across Thermal Environments

Cited by 29 publications

References 81 publications

A network of CLAVATA receptors buffers auxin-dependent meristem maintenance

A network of CLAVATA receptors buffers auxin-dependent meristem maintenance

CLE14 functions as a “brake signal” to suppress age-dependent and stress-induced leaf senescence by promoting JUB1-mediated ROS scavenging in Arabidopsis

Genetic Mechanisms of Cold Signaling in Wheat (Triticum aestivum L.)

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