The jasmonate receptor COI1 plays a role in jasmonate-induced lateral root formation and lateral root positioning in Arabidopsis thaliana

Raya‐González, Javier; Pelagio‐Flores, Ramón; López‐Bucio, José

doi:10.1016/j.jplph.2012.05.002

Cited by 80 publications

(56 citation statements)

References 75 publications

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“…This indicates that JA-mediated signaling and RSOsPR10 are involved in root growth in response to environmental stresses. Several studies have also suggested the importance of JA signaling and cross-talk between JA and auxin for root growth and lateral root formation (Sun et al 2009;Raya-González et al 2012;Gutierrez et al 2012;Hentrich et al 2013;Lu et al 2015). A phenotyping study involving bean cultivars indicated the importance of root traits, such as root length and surface area, for drought tolerance (Abenavoli et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Overexpression of RSOsPR10, a root-specific rice PR10 gene, confers tolerance against drought stress in rice and drought and salt stresses in bentgrass

Takeuchi

Hasegawa

Gyohda

et al. 2016

Plant Cell Tiss Organ Cult

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RSOsPR10 was originally identified as a rice root-specific pathogenesis-related protein whose production was induced by drought and salinity stresses, but not by low temperature or abscisic acid. Our previous studies revealed that RSOsPR10 expression is up-regulated by jasmonic acid, and strongly inhibited by salicylic acid. Immunohistochemical experiments indicated RSOsPR10 is expressed in the root cortical cells. In the present study, we generated RSOsPR10-overexpressing lines of rice and bentgrass to examine the physiological roles of RSOsPR10 in plants. RSOsPR10-overexpressing rice plants were highly tolerant against drought stress, but not against salinity. In contrast, RSOsPR10-overexpressing bentgrass plants were tolerant against drought and salinity stresses. There was little difference between transgenic and wildtype plants regarding phenotype or above-ground growth rates. However, the root mass of the transgenic rice and bentgrass plants was significantly greater than that of the wild-type plants. Therefore, RSOsPR10 is likely involved in mediating environmental stress tolerance through an increase in root growth and development.

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Section: Discussionmentioning

confidence: 99%

Overexpression of RSOsPR10, a root-specific rice PR10 gene, confers tolerance against drought stress in rice and drought and salt stresses in bentgrass

Takeuchi

Hasegawa

Gyohda

et al. 2016

Plant Cell Tiss Organ Cult

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“…Together, these contrasting responses of pft1-2 and 35S:PFT1 seedlings to an IAA efflux inhibitor in terms of both primary root growth and lateral root formation suggest a role for PFT1/MED25 in modulating auxin transport and response. (Raya-González et al, 2012), it was important to test the function of PFT1/MED25 in JA-mediated root architecture regulation. Primary root growth and lateral root formation were analyzed in wild-type, pft1-2, and coi1-1 seedlings grown side by side.…”

Section: Pft1/med25 Regulates the Expression And Distribution Of The mentioning

confidence: 99%

“…Reduction in root growth and carbon allocation patterns in several plant species upon mechanical wounding or by herbivory was ascribed to JA. In Arabidopsis, treatment with jasmonates strongly inhibits primary root growth and promotes lateral root formation (Sun et al, 2009;Raya-González et al, 2012). JA promoted lateral root formation through auxin biosynthesis and transport by directly inducing the auxin biosynthesis gene ASA1 (Sun et al, 2009).…”

Section: Pft1 Modulates Auxin-inducible Gene Expressionmentioning

confidence: 99%

“…Recently, it has been found that CORONATINE-INSENSITIVE1 (COI1), the jasmonic acid (JA) receptor, is required to mediate lateral root formation in response to JA, a canonical defense signal, thus indicating the participation of downstream signaling components integrating the responses of two or more plant hormones into plant organogenesis (Raya-González et al, 2012).…”

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PHYTOCHROME AND FLOWERING TIME1/MEDIATOR25 Regulates Lateral Root Formation via Auxin Signaling in Arabidopsis

et al. 2014

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Root system architecture is a major determinant of water and nutrient acquisition as well as stress tolerance in plants. The Mediator complex is a conserved multiprotein complex that acts as a universal adaptor between transcription factors and the RNA polymerase II. In this article, we characterize possible roles of the MEDIATOR8 (MED8) and MED25 subunits of the plant Mediator complex in the regulation of root system architecture in Arabidopsis (Arabidopsis thaliana). We found that loss-of-function mutations in PHYTOCHROME AND FLOWERING TIME1 (PFT1)/MED25 increase primary and lateral root growth as well as lateral and adventitious root formation. In contrast, PFT1/MED25 overexpression reduces these responses, suggesting that PFT1/MED25 is an important element of meristematic cell proliferation and cell size control in both lateral and primary roots. PFT1/MED25 negatively regulates auxin transport and response gene expression in most parts of the plant, as evidenced by increased and decreased expression of the auxin-related reporters PIN-FORMED1 (PIN1)::PIN1::GFP (for green fluorescent protein), DR5:GFP, DR5:uidA, and BA3:uidA in pft1-2 mutants and in 35S:PFT1 seedlings, respectively. No alterations in endogenous auxin levels could be found in pft1-2 mutants or in 35S:PFT1-overexpressing seedlings. However, detailed analyses of DR5:GFP and DR5:uidA activity in wildtype, pft1-2, and 35S:PFT1 seedlings in response to indole-3-acetic acid, naphthaleneacetic acid, and the polar auxin transport inhibitor 1-N-naphthylphthalamic acid indicated that PFT1/MED25 principally regulates auxin transport and response. These results provide compelling evidence for a new role for PFT1/MED25 as an important transcriptional regulator of root system architecture through auxin-related mechanisms in Arabidopsis.

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“…Additionally, similar molecular factors have been revealed in both processes (Verstraeten et al, 2014 and references therein). In contrast, hypocotyl and root explants respond differently to jasmonates (Gutierrez et al, 2012;Raya-Gonzalez et al, 2012) and ethylene (Clark et al, 1999;Negi et al, 2008). Moreover, while auxins and auxin signaling are essential for all stages of LR development (Peret et al, 2009(Peret et al, , 2012Lavenus et al, 2013), exogenous auxin is only stimulating during the first stages of AR development and inhibits later developmental stages (De Klerk et al, 1995, 1999b).…”

Section: Explant Typementioning

confidence: 99%

Adventitious root formation in Arabidopsis : underlying mechanisms and applications

Massoumi¹

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The jasmonate receptor COI1 plays a role in jasmonate-induced lateral root formation and lateral root positioning in Arabidopsis thaliana

Cited by 80 publications

References 75 publications

Overexpression of RSOsPR10, a root-specific rice PR10 gene, confers tolerance against drought stress in rice and drought and salt stresses in bentgrass

Overexpression of RSOsPR10, a root-specific rice PR10 gene, confers tolerance against drought stress in rice and drought and salt stresses in bentgrass

PHYTOCHROME AND FLOWERING TIME1/MEDIATOR25 Regulates Lateral Root Formation via Auxin Signaling in Arabidopsis

Adventitious root formation in Arabidopsis : underlying mechanisms and applications

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