Interaction of gibberellin and other hormones in almond anthers: phenotypic and physiological changes and transcriptomic reprogramming

Tian, Ji; Guo, Changkui; Luo, Sulan; Jiang, Li

doi:10.1038/s41438-021-00527-w

Cited by 18 publications

(14 citation statements)

References 61 publications

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“…At low temperatures, in rice, the drop of endogenous GA content due to the repression of the GA20ox3 and GA3ox1 genes and the increase in the SLR1 DELLA protein blocks pollen production and drives infertility, but the process can be reverted by adding exogenous GA [ 157 ]. Moreover, treatments with exogenous GA 3 show that GA regulates anther and pollen development by improving cold tolerance in almond [ 158 ]. In rapeseed, male sterility is also produced after high-temperature treatments, which interferes with the GA signaling pathway [ 159 ].…”

Section: Reproductive Developmentmentioning

confidence: 99%

Plant Development and Crop Yield: The Role of Gibberellins

Castro-Camba

Sánchez²,

Vidal³

et al. 2022

Plants

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Gibberellins have been classically related to a few key developmental processes, thus being essential for the accurate unfolding of plant genetic programs. After more than a century of research, over one hundred different gibberellins have been described. There is a continuously increasing interest in gibberellins research because of their relevant role in the so-called "Green Revolution", as well as their current and possible applications in crop improvement. The functions attributed to gibberellins have been traditionally restricted to the regulation of plant stature, seed germination, and flowering. Nonetheless, research in the last years has shown that these functions extend to many other relevant processes. In this review, the current knowledge on gibberellins homeostasis and mode of action is briefly outlined, while specific attention is focused on the many different responses in which gibberellins take part. Thus, those genes and proteins identified as being involved in the regulation of gibberellin responses in model and non-model species are highlighted. The present review aims to provide a comprehensive picture of the state-of-the-art perception of gibberellins molecular biology and its effects on plant development. This picture might be helpful to enhance our current understanding of gibberellins biology and provide the know-how for the development of more accurate research and breeding programs.

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Section: Reproductive Developmentmentioning

confidence: 99%

Plant Development and Crop Yield: The Role of Gibberellins

Castro-Camba

Sánchez²,

Vidal³

et al. 2022

Plants

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“…Also, the inoculation by Piriformospora indica fungus enhanced the pollen viability of Cyclamen persicum (Ghanem, Ewald, Zerche, & Hennig, 2014). Most of our endophytic fungi increased the levels of GA3 in tomato leaves, which elucidates the valuable role in improving pollen viability (Li, Tian, Guo, Luo, & Li, 2021).…”

Section: Discussionmentioning

confidence: 82%

Desert endophytic fungi improve reproductive, morphological, biochemical, yield and fruit quality characteristics of tomato under drought stress

Halo¹,

Al-Yahyai

Al-Sadi

et al. 2023

AGJSR

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PurposeCrops are increasingly affected by drought; hence, the current study explored the potential role of three desert endophytic fungi, Aspergillus fumigatus, Aspergillus terreus and Talaromyces variabilis, in conferring drought tolerance in tomato plants.Design/methodology/approachPreserved endophytic fungi from a Rhazya stricta desert plant were adopted to obtain the required fungal treatment; tomatoes received fungal treatments directly in plastic trays and subsequently in pots. Drought was applied using 15% of PEG-6000 at two stages: flowering and fruiting. The following parameters were measured: pollen sterility, growth characteristics, morphological analysis and biochemical analysis, including proline, gibberellic acid (GA3) and chlorophyll measurements; thus, the data were analyzed statistically using SPSS software.FindingsAll applied endophytes significantly promoted pollen viability and tomato yield under stressed and nonstressed conditions. Interestingly, these endophytes significantly enhanced the number of trichomes under drought stress and promoted tomato fruit quality. The colonized tomato plants accumulated a high proline level under drought stress but lower than un-inoculated stressed plants. Also, a significant rise in growth characteristics was observed by A. fumigatus and A. terreus under normal conditions. Moreover, both raised GA3 levels under drought-stressed and nonstressed conditions. Also these two endophytes enhanced chlorophyll and carotenoid contents under drought stress. Fruit characteristics were enhanced by nonstressed T. variabilis and stressed A. fumigatus.Originality/valueThe present endophytic fungi provide impressive benefits to their host in normal and drought-stressed conditions. Consequently, they represent valuable sources as sustainable and environmentally friendly alternatives to mitigate drought stress.

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“…Expression patterns of several redox state‐related and hormone‐related genes were verified in the wild type and mutant by carrying out qRT‐PCR analysis (Figure 5c). Together, these results suggested that disruption of ZmRPN1 may result in altered transcription of genes involved in cellular redox and hormone status, which contribute to the lineage specification of tapetal cells and microsporocytes in plants (Estornell et al ., 2018; Li et al ., 2022b; Xie et al ., 2022).…”

Section: Resultsmentioning

confidence: 99%

ZmRPN1 confers quantitative variation in pollen number and boosts hybrid seed production in maize

Guo

Jiang

et al. 2023

Plant Biotechnology Journal

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SummaryThe number of pollen grains is a critical determinant of reproductive success in seed plants and varies among species and individuals. However, in contrast with many mutant‐screening studies relevant to anther and pollen development, the natural genetic basis for variations in pollen number remains largely unexplored. To address this issue, we carried out a genome‐wide association study in maize, ultimately revealing that a large presence/absence variation in the promoter region of ZmRPN1 alters its expression level and thereby contributes to pollen number variation. Molecular analyses showed that ZmRPN1 interacts with ZmMSP1, which is known as a germline cell number regulator, and facilitates ZmMSP1 localization to the plasma membrane. Importantly, ZmRPN1 dysfunction resulted in a substantial increase in pollen number, consequently boosting seed production by increasing female–male planting ratio. Together, our findings uncover a key gene controlling pollen number, and therefore, modulation of ZmRPN1 expression could be efficiently used to develop elite pollinators for modern hybrid maize breeding.

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Interaction of gibberellin and other hormones in almond anthers: phenotypic and physiological changes and transcriptomic reprogramming

Cited by 18 publications

References 61 publications

Plant Development and Crop Yield: The Role of Gibberellins

Plant Development and Crop Yield: The Role of Gibberellins

Desert endophytic fungi improve reproductive, morphological, biochemical, yield and fruit quality characteristics of tomato under drought stress

ZmRPN1 confers quantitative variation in pollen number and boosts hybrid seed production in maize

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