ABA and IAA control microsporogenesis in Petunia hybrida L.

Ковалева, Л. В.; Воронков, А. С.; Захарова, Е. В.; Andreev, I. M.

doi:10.1007/s00709-017-1185-x

Cited by 21 publications

(12 citation statements)

References 44 publications

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“…Importantly, auxin has been reported as a key regulator at both early and latter stages of male gametogenesis, where it has been shown to be important for cellular differentiation, cell elongation and division [ 70 ]. ABA on the other hand, is suggested to act as a potential signal leading to male sterility [ 71 ]. Confirmation of the importance of such cis -elements in hormone response signaling during microsporogenesis requires further experimentation.…”

Section: Discussionmentioning

confidence: 99%

Wheat TaMs1 is a glycosylphosphatidylinositol-anchored lipid transfer protein necessary for pollen development

et al. 2018

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BackgroundIn flowering plants, lipid biosynthesis and transport within anthers is essential for male reproductive success. TaMs1, a dominant wheat fertility gene located on chromosome 4BS, has been previously fine mapped and identified to encode a glycosylphosphatidylinositol (GPI)-anchored non-specific lipid transfer protein (nsLTP). Although this gene is critical for pollen exine development, details of its function remains poorly understood.ResultsIn this study, we report that TaMs1 is only expressed from the B sub-genome, with highest transcript abundance detected in anthers containing microspores undergoing pre-meiosis through to meiosis. β-glucuronidase transcriptional fusions further revealed that TaMs1 is expressed throughout all anther cell-types. TaMs1 was identified to be expressed at an earlier stage of anther development relative to genes reported to be necessary for sporopollenin precursor biosynthesis. In anthers missing a functional TaMs1 (ms1c deletion mutant), these same genes were not observed to be mis-regulated, indicating an independent function for TaMs1 in pollen development. Exogenous hormone treatments on GUS reporter lines suggest that TaMs1 expression is increased by both indole-3-acetic acid (IAA) and abscisic acid (ABA). Translational fusion constructs showed that TaMs1 is targeted to the plasma membrane.ConclusionsIn summary, TaMs1 is a wheat fertility gene, expressed early in anther development and encodes a GPI-LTP targeted to the plasma membrane. The work presented provides a new insight into the process of wheat pollen development.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1557-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Wheat TaMs1 is a glycosylphosphatidylinositol-anchored lipid transfer protein necessary for pollen development

et al. 2018

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“…In maize, the appropriate onset and progression of PCD in the endosperm depend on the balance between ABA and ethylene; treating the wild type with an inhibitor of ABA biosynthesis phenocopied ABA-deficient mutants, including an increase in ethylene production and accelerated execution of PCD [ 82 ]. Abiotic stresses such as heat, cold, salt, and drought were reported to increase the ABA content in several different plants, resulting in ROS accumulation and induction of PCD [ 83 , 84 ].…”

Section: Factors Regulating Plant Pcdmentioning

confidence: 99%

Initiation and Execution of Programmed Cell Death and Regulation of Reactive Oxygen Species in Plants

Zheng

Jiang

et al. 2021

IJMS

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Programmed cell death (PCD) plays crucial roles in plant development and defence response. Reactive oxygen species (ROS) are produced during normal plant growth, and high ROS concentrations can change the antioxidant status of cells, leading to spontaneous cell death. In addition, ROS function as signalling molecules to improve plant stress tolerance, and they induce PCD under different conditions. This review describes the mechanisms underlying plant PCD, the key functions of mitochondria and chloroplasts in PCD, and the relationship between mitochondria and chloroplasts during PCD. Additionally, the review discusses the factors that regulate PCD. Most importantly, in this review, we summarise the sites of production of ROS and discuss the roles of ROS that not only trigger multiple signalling pathways leading to PCD but also participate in the execution of PCD, highlighting the importance of ROS in PCD.

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“…Proline is an osmolyte that accumulates under a variety of osmotic stresses (Ashraf and Foolad, 2007; Kavi Kishor and Sreenivasulu, 2014). ABA plays an important role in drought stress response, but is also involved in various aspects of anther and pollen development, including programmed cell death of the tapetum and maturation of the anther wall (Dai et al, 2018; Kovaleva et al, 2018; Rezaul et al, 2019). ABA accumulation in pollen precedes proline accumulation (Chibi et al, 1995).…”

Section: Pollen Desiccation and Its Relationship To Sporophytic Drougmentioning

confidence: 99%

Pollen Developmental Arrest: Maintaining Pollen Fertility in a World With a Changing Climate

Pacini

Dolferus

2019

Front. Plant Sci.

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During evolution of land plants, the haploid gametophytic stage has been strongly reduced in size and the diploid sporophytic phase has become the dominant growth form. Both male and female gametophytes are parasitic to the sporophyte and reside in separate parts of the flower located either on the same plant or on different plants. For fertilization to occur, bi-cellular or tri-cellular male gametophytes (pollen grains) have to travel to the immobile female gametophyte in the ovary. To survive exposure to a hostile atmosphere, pollen grains are thought to enter a state of complete or partial developmental arrest (DA). DA in pollen is strongly associated with acquisition of desiccation tolerance (DT) to extend pollen viability during air travel, but occurrence of DA in pollen is both species-dependent and at the same time strongly dependent on the reigning environmental conditions at the time of dispersal. Several environmental stresses (heat, drought, cold, humidity) are known to affect pollen production and viability. Climate change is also posing a serious threat to plant reproductive behavior and crop productivity. It is therefore timely to gain a better understanding of how DA and pollen viability are controlled in plants and how pollen viability can be protected to secure crop yields in a changing environment. Here, we provide an overview of how DA and pollen viability are controlled and how the environment affects them. We make emphasis on what is known and areas where a deeper understanding is needed.

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ABA and IAA control microsporogenesis in Petunia hybrida L.

Cited by 21 publications

References 44 publications

Wheat TaMs1 is a glycosylphosphatidylinositol-anchored lipid transfer protein necessary for pollen development

Wheat TaMs1 is a glycosylphosphatidylinositol-anchored lipid transfer protein necessary for pollen development

Initiation and Execution of Programmed Cell Death and Regulation of Reactive Oxygen Species in Plants

Pollen Developmental Arrest: Maintaining Pollen Fertility in a World With a Changing Climate

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