Positive regulation of <i>AMS</i> by TDF1 and the formation of a TDF1–AMS complex are required for anther development in <i>Arabidopsis thaliana</i>

Lou, Yue; Zhou, Haisheng; Yue-hong, Han; Zeng, Qiu-Ye; Zhu, Jun; Yang, Zhong‐Nan

doi:10.1111/nph.14790

Cited by 84 publications

(71 citation statements)

References 72 publications

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“…The DYT1-TDF1-AMS-Ms188-Ms1 genetic pathway and regulatory network has been constructed and confirmed in Arabidopsis (Zhu et al, 2008;Lou et al, 2018), and the corresponding genetic pathway in maize is predicted to be Ms32-Ms9-bHLH51-ZmMYB80-ZmMs7 ( Figure 3C) based on the orthologous relationships between GMS genes in these two species. However, mutants of bHLH51 and ZmMYB80 in maize have not been identified so far, and the Ms32-Ms9-bHLH51-ZmMYB80-ZmMs7 genetic pathway also remains to be investigated.…”

Section: Phase Iii: Tapetum Development and Pmc Meiosismentioning

confidence: 91%

Maize Genic Male-Sterility Genes and Their Applications in Hybrid Breeding: Progress and Perspectives

et al. 2019

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As one of the most important crops, maize not only has been a source of the food, feed, and industrial feedstock for biofuel and bioproducts, but also became a model plant system for addressing fundamental questions in genetics. Male sterility is a very useful trait for hybrid vigor utilization and hybrid seed production. The identification and characterization of genic male-sterility (GMS) genes in maize and other plants have deepened our understanding of the molecular mechanisms controlling anther and pollen development, and enabled the development and efficient use of many biotechnology-based male-sterility (BMS) systems for crop hybrid breeding. In this review, we summarize main advances on the identification and characterization of GMS genes in maize, and construct a putative regulatory network controlling maize anther and pollen development by comparative genomic analysis of GMS genes in maize, Arabidopsis, and rice. Furthermore, we discuss and appraise the features of more than a dozen BMS systems for propagating male-sterile lines and producing hybrid seeds in maize and other plants. Finally, we provide our perspectives on the studies of GMS genes and the development of novel BMS systems in maize and other plants. The continuous exploration of GMS genes and BMS systems will enhance our understanding of molecular regulatory networks controlling male fertility and greatly facilitate hybrid vigor utilization in breeding and field production of maize and other crops.

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Section: Phase Iii: Tapetum Development and Pmc Meiosismentioning

confidence: 91%

Maize Genic Male-Sterility Genes and Their Applications in Hybrid Breeding: Progress and Perspectives

et al. 2019

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“…The determination of BR content was performed according to the protocol described by Lou et al (). For BR extraction, 20 mg of frozen stamen tissues was ground and homogenized in 300 μl of acetonitrile (Merck KGaA, http://www.merckmillipore.com) containing 0.1 ng [ 2 H 3 ] BL and 0.1 ng [ 2 H 3 ] CS (Olchemim Ltd, https://www.olchemim.cz) as internal standards.…”

Section: Methodsmentioning

confidence: 99%

Brassinosteroid‐mediated reactive oxygen species are essential for tapetum degradation and pollen fertility in tomato

et al. 2020

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Phytohormone brassinosteroids (BRs) are essential for plant growth and development, but the mechanisms of BR-mediated pollen development remain largely unknown. In this study, we show that pollen viability, pollen germination and seed number decreased in the BR-deficient mutant d^i m , which has a lesion in the BR biosynthetic gene DWARF (DWF), and in the bzr1 mutant, which is deficient in BR signaling regulator BRASSINAZOLE RESISTANT 1 (BZR1), compared with those in wild-type plants, whereas plants overexpressing DWF or BZR1 exhibited the opposite effects. Loss or gain of function in the DWF or BZR1 genes altered the timing of reactive oxygen species (ROS) production and programmed cell death (PCD) in tapetal cells, resulting in delayed or premature tapetal degeneration, respectively. Further analysis revealed that BZR1 could directly bind to the promoter of RESPIRATORY BURST OXIDASE HOMOLOG 1 (RBOH1), and that RBOH1-mediated ROS promote pollen and seed development by triggering PCD and tapetal cell degradation. In contrast, the suppression of RBOH1 compromised BR signaling-mediated ROS production and pollen development. These findings provide strong evidence that BZR1-dependent ROS production plays a critical role in the BR-mediated regulation of tapetal cell degeneration and pollen development in Solanum lycopersicum (tomato) plants.

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“…DYT1 affects many downstream genes related to tapetum development and pollen wall formation by directly regulating TDF1 (Gu et al, 2014). TDF1 directly regulates AMS, AMS regulates MS188, and MS188 regulates MS1 (Lou et al, 2014(Lou et al, , 2018 Gu, Z.A. Wilson, and Z.N.…”

Section: The Regulation Of Sporopollenin Biosynthesis Genes For Rapidmentioning

confidence: 99%

“…DYT1, TDF1, AMS, MS188, and MS1 form a genetic pathway that is important for tapetal development and pollen wall formation (Zhu et al, 2011;Gu et al, 2014;Lou et al, 2014Lou et al, , 2018; Fig. 2A).…”

Section: Ams and Ms188 Are Required For The Expression Of Sporopollenmentioning

confidence: 99%

“…MS188, a MYB gene family member, is the key regulator in activating the expression of sporopollenin synthesis genes for pollen wall formation. In the tapetum, AMS (bHLH family) is reported to interact with MS188 (MYB family; Xiong et al, 2016;Lou et al, 2018). AMS can bind to the promoters of several sporopollenin synthesis genes (Xu et al, 2014).…”

Section: Ams Interacting With Ms188 May Form a Feed-forward Loop To Hmentioning

confidence: 99%

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The Regulation of Sporopollenin Biosynthesis Genes for Rapid Pollen Wall Formation

et al. 2018

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Sporopollenin is the major component of the outer pollen wall (sexine). It is synthesized using a pathway of approximately eight genes in Arabidopsis (). MALE STERILITY188 (MS188) and its direct upstream regulator ABORTED MICROSPORES (AMS) are two transcription factors essential for tapetum development. Here, we show that all the sporopollenin biosynthesis proteins are specifically expressed in the tapetum and are secreted into anther locules. MS188, a MYB transcription factor expressed in the tapetum, directly regulates the expression of (), , (), and a CYTOCHROME P450 gene (). By contrast, the expression of , (), () and are significantly reduced in mutants but not affected in mutants. However, MS188 but not AMS can activate the expression of, , and In , dominant suppression of MS188 homologs reduced the expression of these genes, suggesting that MS188 and other MYB family members play redundant roles in activating their expression. The expression of some sporopollenin synthesis genes (, ,, , and) was rescued when was expressed in Therefore, MS188 is a key regulator for activation of sporopollenin synthesis, and AMS and MS188 may form a feed-forward loop that activates the expression of the sporopollenin biosynthesis pathway for rapid pollen wall formation.

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Positive regulation of AMS by TDF1 and the formation of a TDF1–AMS complex are required for anther development in Arabidopsis thaliana

Cited by 84 publications

References 72 publications

Maize Genic Male-Sterility Genes and Their Applications in Hybrid Breeding: Progress and Perspectives

Maize Genic Male-Sterility Genes and Their Applications in Hybrid Breeding: Progress and Perspectives

Brassinosteroid‐mediated reactive oxygen species are essential for tapetum degradation and pollen fertility in tomato

The Regulation of Sporopollenin Biosynthesis Genes for Rapid Pollen Wall Formation

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