<i>MOTHER OF FT AND TFL1</i>Regulates Seed Germination through a Negative Feedback Loop Modulating ABA Signaling in<i>Arabidopsis</i>

Xi, Wanyan; Liu, Chang; Hou, Xue‐Long; Yu, Hao

doi:10.1105/tpc.109.073072

Cited by 302 publications

(319 citation statements)

References 60 publications

(100 reference statements)

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“…GUS staining of MFT(P2)-GUS plants 9 showed that MFT was highly expressed in mature pollen grains in stamens (Fig. 2B) and in the endosperm of mature ovules (Fig.…”

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

“…2C). We have recently shown that MFT is highly expressed in developing seeds by quantitative real-time PCR, 9 but the precise localization of MFT in developing seeds has not been examined. We thus performed in situ hybridization to examine MFT expression in further investigated whether MFT is also involved in the crosstalk between ABA and BR.…”

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

“…1 Thus, like GA, BR can also antagonize ABA to promote seed germination. Since we have shown that MFT responds to both ABA and GA signals to regulate seed germination, 9 we integrate signals at different levels. We show in this addendum to our recent report 9 that MFT also plays a role in the cross-talk between ABA and BR in seed germination.…”

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

“…Since we have shown that MFT responds to both ABA and GA signals to regulate seed germination, 9 we integrate signals at different levels. We show in this addendum to our recent report 9 that MFT also plays a role in the cross-talk between ABA and BR in seed germination. In addition, we further show that MFT promotes fertility when BR biosynthesis is blocked.…”

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

“…9 Here we show that MFT functions in regulating seed germination and fertility, which is also relevant to the BR signaling pathway. Thus, MFT seems to function specifically in seeds in response to various phytohormones.…”

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MOTHER OFFT ANDTFL1regulates seed germination and fertility relevant to the brassinosteroid signaling pathway

2010

Plant Signaling & Behavior

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B rassinosteroids (BRs) are a family of plant steroid hormones that play diverse roles in many aspects of plant growth and development. For example, BRs promote seed germination by counteracting the inhibitory effect of ABA and regulate plant reproductive development, thus affecting seed yield. We have recently reported that MOTHER OF FT AND TFL1 (MFT ) regulates seed germination through a negative feedback loop modulating ABA signaling in Arabidopsis. Here, we show that MFT function is also relevant to the BR signaling pathway. In mft loss-of-function mutants, the application of BR could not fully antagonize the inhibitory effect of exogenous ABA on seed germination, suggesting that BR promotes seed germination against ABA partly through MFT. In addition, mft enhances the lowfertility phenotype of det2 in which BR biosynthesis is blocked. This phenotype, together with the observation that MFT is expressed in gametophytes and developing seeds, suggests that MFT and BR play redundant roles in regulating fertility. Therefore, these results suggest that MFT affects seed germination and fertility relevant to the BR signaling pathway.Plant hormones exert profound effects on many fundamental processes during plant growth and development. With respect to seed development and germination, it has long been known that abscisic acid (ABA) and gibberellin (GA) are two major types of phytohormones that play antagonistic roles in regulating these events. Not until recently, another group of phytohormones, namely brassinosteroids (BRs),

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“…GUS staining of MFT(P2)-GUS plants 9 showed that MFT was highly expressed in mature pollen grains in stamens (Fig. 2B) and in the endosperm of mature ovules (Fig.…”

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

Section: Mft Is Expressed In Gametophytes and Developing Seedsmentioning

confidence: 99%

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MOTHER OFFT ANDTFL1regulates seed germination and fertility relevant to the brassinosteroid signaling pathway

2010

Plant Signaling & Behavior

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Dormancy in Plants

Soppe

Bentsink

2016

Encyclopedia of Life Sciences

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Advanced articleArticle Contents • Introduction • The Role of Dormancy in Plants under Natural and Agricultural Conditions • Dormancy Cycling • The Regulation of Dormancy th August 2016 Dormancy is a strategy of higher plants to survive adverse conditions by pausing growth and development, which can occur in different organs like seeds and buds. Dormancy is controlled both by genetic and environmental factors and most of our knowledge about its regulation has been obtained by studying seeds. Seed dormancy is an important adaptive trait in wild plants and has been under negative selection during domestication. The plant hormone abscisic acid has been shown to play a crucial role in the establishment and maintenance of dormancy, whereas gibberellins promote germination. Additional regulators include reactive oxygen species and epigenetic modifications. Large differences in seed dormancy have been found within species and the identification of the underlying genes revealed several novel genes that specifically regulate dormancy.

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Plant Hormones

Cutler

Nelson

2017

Encyclopedia of Life Sciences

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Plant hormones coordinate physiology and development between organ systems, which can often be separated by large distances. In this article, we focus on the set of nine small molecule plant hormone families that are present throughout land plants: auxins, gibberellins, jasmonates, salicylates, brassinolides, strigolactones, cytokinins, abscisic acid, and ethylene. We cover the basic aspects of their physiological roles, biosynthesis, signal transduction and agricultural relevance. We note commonalities in the molecular mechanisms of plant hormone perception and signal transduction; for example, hormone‐stabilised protein–protein interactions, that are often linked directly to ubiquitylation of downstream effector proteins are prevalent. Plant hormone signalling pathways preferentially exploit soluble receptors over transmembrane receptors; brassinosteroids are the only hormone family known to act through a classical plasma membrane‐anchored receptor kinase, a modality common in animal signal transduction pathways. Plant hormones provide a complementary set of molecular solutions to the biological problem of communicating information over long distances in multicellular organisms. Key Concepts Plant hormones are small organic molecules that can act at a distance from their site of synthesis with high potency. At least nine hormones are present throughout most land plants and function in long‐distance communication. Most plant hormones are perceived by soluble receptors. Synthetic plant hormone mimics and inhibitors have been developed for agriculture.

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MOTHER OF FT AND TFL1Regulates Seed Germination through a Negative Feedback Loop Modulating ABA Signaling inArabidopsis

Cited by 302 publications

References 60 publications

MOTHER OFFT ANDTFL1regulates seed germination and fertility relevant to the brassinosteroid signaling pathway

MOTHER OFFT ANDTFL1regulates seed germination and fertility relevant to the brassinosteroid signaling pathway

Dormancy in Plants

Plant Hormones

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