A2-type cyclin is required for the asymmetric entry division in rice stomatal development

Qu, Xiaoxiao; Yan, Min; Zou, Junjie; Jiang, Min; Yang, Kezhen; Le, Jie

doi:10.1093/jxb/ery158

Cited by 23 publications

(26 citation statements)

References 51 publications

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“…Yet, in contrast to Arabidopsis, when OsCYAC2;1 or OsCDKB1;1 are knocked down, GMC divisions are uninterrupted (Qu et al, 2018). Intriguingly, fewer asymmetric entry divisions are observed in stomatal cell files in OsCYCA2;1-RNAi plants, leading to an overall reduction in SD (Qu et al, 2018). Nevertheless, both OsCYCA2;1 and OsCDKB1;1 can rescue the defective phenotypes of Arabidopsis cyca2 and cdkb1 mutants respectively (Qu et al, 2018).…”

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 93%

“…Intriguingly, fewer asymmetric entry divisions are observed in stomatal cell files in OsCYCA2;1-RNAi plants, leading to an overall reduction in SD (Qu et al, 2018). Nevertheless, both OsCYCA2;1 and OsCDKB1;1 can rescue the defective phenotypes of Arabidopsis cyca2 and cdkb1 mutants respectively (Qu et al, 2018). Thus, the functions of CYCA2s and CDKB1;1 must be somewhat conserved between rice and Arabidopsis despite the divergence in the timing of their activity (Qu et al, 2018).…”

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

“…While four CYCA2s are found in Arabidopsis, only one CYCA2 gene, OsCYCA2;1, is present in the rice genome (La et al, 2006;Qu et al, 2018). BiFC assays have shown that OsCYCA2;1 and OsCDKB1;1 (orthologue of Arabidopsis CDKB1;1) form a functional complex in rice (Qu et al, 2018). Yet, in contrast to Arabidopsis, when OsCYAC2;1 or OsCDKB1;1 are knocked down, GMC divisions are uninterrupted (Qu et al, 2018).…”

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

“…BiFC assays have shown that OsCYCA2;1 and OsCDKB1;1 (orthologue of Arabidopsis CDKB1;1) form a functional complex in rice (Qu et al, 2018). Yet, in contrast to Arabidopsis, when OsCYAC2;1 or OsCDKB1;1 are knocked down, GMC divisions are uninterrupted (Qu et al, 2018). Intriguingly, fewer asymmetric entry divisions are observed in stomatal cell files in OsCYCA2;1-RNAi plants, leading to an overall reduction in SD (Qu et al, 2018).…”

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

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Pores for Thought: Can Genetic Manipulation of Stomatal Density Protect Future Rice Yields?

2020

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Rice (Oryza sativa L.) contributes to the diets of around 3.5 billion people every day and is consumed more than any other plant. Alarmingly, climate predictions suggest that the frequency of severe drought and high-temperature events will increase, and this is set to threaten the global rice supply. In this review, we consider whether water or heat stresses in cropsespecially ricecould be mitigated through alterations to stomata; minute pores on the plant epidermis that permit carbon acquisition and regulate water loss. In the short-term, water loss is controlled via alterations to the degree of stomatal "openness", or, in the longer-term, by altering the number (or density) of stomata that form. A range of molecular components contribute to the regulation of stomatal density, including transcription factors, plasma membrane-associated proteins and intercellular and extracellular signaling molecules. Much of our existing knowledge relating to stomatal development comes from research conducted on the model plant, Arabidopsis thaliana. However, due to the importance of cereal crops to global food supply, studies on grass stomata have expanded in recent years, with molecular-level discoveries underscoring several divergent developmental and morphological features. Cultivation of rice is particularly water-intensive, and there is interest in developing varieties that require less water yet still maintain grain yields. This could be achieved by manipulating stomatal development; a crop with fewer stomata might be more conservative in its water use and therefore more capable of surviving periods of water stress. However, decreasing stomatal density might restrict the rate of CO 2 uptake and reduce the extent of evaporative cooling, potentially leading to detrimental effects on yields. Thus, the extent to which crop yields in the future climate will be affected by increasing or decreasing stomatal density should be determined. Here, our current understanding of the regulation of stomatal development is summarised, focusing particularly on the genetic mechanisms that have recently been described for rice and other grasses. Application of this knowledge toward the creation of "climate-ready" rice is discussed, with attention drawn to the lesser-studied molecular elements whose contributions to the complexity of grass stomatal development must be understood to advance efforts.

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Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 93%

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

Section: Cyclins and Cyclin-dependent Kinases In The Rice Stomatal LImentioning

confidence: 99%

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Pores for Thought: Can Genetic Manipulation of Stomatal Density Protect Future Rice Yields?

2020

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“…3a). RNAi-mediated knockdown of OsCYCA2;1 diminished the number of stomatal asymmetric entry divisions, which increased the withinfile distance between stomata, but a mechanistic understanding of this regulation is lacking (Qu et al, 2018). We have much to learn about the impact of grass stomatal forms and patterning on fitness and current efforts to answer these questions and promising areas for further research are discussed in the following sections.…”

Section: The (W)hole Perspective: Stomatal Patterning For Fitnessmentioning

confidence: 99%

Stomatal development in the grasses: lessons from models and crops (and crop models)

McKown

Bergmann

2020

New Phytologist

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Summary When plants emerged from their aquatic origins to colonise land, they needed to avoid desiccation while still enabling gas and water exchange with the environment. The solution was the development of a waxy cuticle interrupted by epidermal pores, known as stomata. Despite the importance of stomata in plant physiology and their contribution to global water and carbon cycles, our knowledge of the genetic basis of stomatal development is limited mostly to the model dicot, Arabidopsis thaliana. This limitation is particularly troublesome when evaluating grasses, whose members represent our most agriculturally significant crops. Grass stomatal development follows a trajectory strikingly different from Arabidopsis and their uniquely shaped four‐celled stomatal complexes are especially responsive to environmental inputs. Thus, understanding the development and regulation of these efficient complexes is of particular interest for the purposes of crop engineering. This review focuses on genetic regulation of grass stomatal development and prospects for the future, highlighting discoveries enabled by parallel comparative investigations in cereal crops and related genetic model species such as Brachypodium distachyon.

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Transcriptomic analysis reveals the role of FOUR LIPS in response to salt stress in rice

Zhang

Liu

et al. 2022

Plant Mol Biol

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A2-type cyclin is required for the asymmetric entry division in rice stomatal development

Abstract: The rice genome contains a single gene OsCYCA2;1 encoding A2-type cyclin, which is an evolutionarily conserved protein required for asymmetric cell divisions to produce stomatal lineage cells.

Cited by 23 publications

References 51 publications

Pores for Thought: Can Genetic Manipulation of Stomatal Density Protect Future Rice Yields?

Pores for Thought: Can Genetic Manipulation of Stomatal Density Protect Future Rice Yields?

Stomatal development in the grasses: lessons from models and crops (and crop models)

Transcriptomic analysis reveals the role of FOUR LIPS in response to salt stress in rice

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