Auxin controls the division of root endodermal cells

Seo, Deok Hyun; Jeong, Haewon; Choi, Yang Do; Jang, Geupil

doi:10.1093/plphys/kiab341

Cited by 15 publications

(8 citation statements)

References 72 publications

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“…Auxin is a major growth hormone that controls these cellular processes, especially in roots ( Perrot-Rechenmann, 2010 ; Barbeza et al, 2017 ; Huang et al, 2019 ; Seo et al, 2021 ), and SA can influence root development by affecting the accumulation and transport of auxin. Pasternak et al (2019) proved that exogenous SA affects the root tip meristem in Arabidopsis in a concentration-dependent manner.…”

Section: Role Of Sa Crosstalk With Other Hormones In the Regulation O...mentioning

confidence: 99%

Action of Salicylic Acid on Plant Growth

Sun

Liu

2022

Front. Plant Sci.

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The phytohormone salicylic acid (SA) not only is a well-known signal molecule mediating plant immunity, but also is involved in plant growth regulation. However, while its role in plant immunity has been well elucidated, its action on plant growth has not been clearly described to date. Recently, increasing evidence has shown that SA plays crucial roles in regulating cell division and cell expansion, the key processes that determines the final stature of plant. This review summarizes the current knowledge on the action and molecular mechanisms through which SA regulates plant growth via multiple pathways. It is here highlighted that SA mediates growth regulation by affecting cell division and expansion. In addition, the interactions of SA with other hormones and their role in plant growth determination were also discussed. Further understanding of the mechanism underlying SA-mediated growth will be instrumental for future crop improvement.

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Section: Role Of Sa Crosstalk With Other Hormones In the Regulation O...mentioning

confidence: 99%

Action of Salicylic Acid on Plant Growth

Sun

Liu

2022

Front. Plant Sci.

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“…Arabidopsis thaliana ecotype Columbia-0 was used as the wild-type control. The DR5::VENUS line was described previously ( Brunoud et al, 2012 ; Seo et al, 2021 ). Seeds were obtained from the Nottingham Arabidopsis Stock Centre.…”

Section: Methodsmentioning

confidence: 99%

Division of cortical cells is regulated by auxin in Arabidopsis roots

et al. 2022

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The root cortex transports water and nutrients absorbed by the root epidermis into the vasculature and stores substances such as starch, resins, and essential oils. The cortical cells are also deeply involved in determining epidermal cell fate. In Arabidopsis thaliana roots, the cortex is composed of a single cell layer generated by a single round of periclinal division of the cortex/endodermis initials. To further explore cortex development, we traced the development of the cortex by counting cortical cells. Unlike vascular cells, whose number increased during the development of root apical meristem (RAM), the number of cortical cells did not change, indicating that cortical cells do not divide during RAM development. However, auxin-induced cortical cell division, and this finding was confirmed by treatment with the auxin transport inhibitor N-1-naphthylphthalamic acid (NPA) and examining transgenic plants harboring CO2::ΔARF5, in which cortical expression of truncated AUXIN RESPONSE FACTOR5 (ΔARF5) induces auxin responses. NPA-induced cortical auxin accumulation and CO2::ΔARF5-mediated cortical auxin response induced anticlinal and periclinal cell divisions, thus increasing the number of cortical cells. These findings reveal a tight link between auxin and cortical cell division, suggesting that auxin is a key player in determining root cortical cell division.

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“…The germination process of seeds is influenced by multiple hormones, the most important of which are GA and ABA [51]. The application of exogenous GA increases SA biosynthesis in wild Arabidopsis plants or promotes seed germination and seedling growth in the sid2 mutant under adverse conditions, suggesting a synergistic interplay between SA and GA [52]. ET and JA also play vital roles in seed germination.…”

Section: Seed Germinationmentioning

confidence: 99%

The Role of Salicylic Acid Signal in Plant Growth, Development and Abiotic Stress

Hu¹,

Zhi²,

Li³

et al. 2022

Phyton

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In nature, plants are constantly affected by adverse conditions. Unlike animals, plants can resist these adverse stresses only by insisting on their original positions. Stress can be divided into biological stress and abiotic stress, abiotic stress directly affects the growth, development and yield of plants, it spans all developmental stages from seed germination to senescence. In order to adapt to changing environment, plants have evolved well-developed mechanisms that help to perceive the stress signals and enable optimal growth response. Salicylic acid (SA) is an important endogenous signal molecule in plants, which not only regulate some plant growth and development processes, but also plays an important part in plant stress resistance. Much work about salicylic acid has been done on the immunity of plants to pathogens, and the synthesis and signal transduction of SA are clearly understood, its function in plant growth, development and abiotic stress is also well learned, we systemically summarized the multiple function of SA signal in non-pathogen-related response, such review should help us understand the common but essential function of SA signal in modulating plant growth, development and abiotic stress.

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Auxin controls the division of root endodermal cells

Cited by 15 publications

References 72 publications

Action of Salicylic Acid on Plant Growth

Action of Salicylic Acid on Plant Growth

Division of cortical cells is regulated by auxin in Arabidopsis roots

The Role of Salicylic Acid Signal in Plant Growth, Development and Abiotic Stress

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