Competitive binding of antagonistic peptides fine-tunes stomatal patterning

Lee, Jin Suk; Hnilova, Marketa; Maes, Michal; Lin, Ya Chen Lisa; Putarjunan, Aarthi; Han, Soon Ki; Ávila-Pacheco, Julián; Torii, Keiko U.

doi:10.1038/nature14561

Cited by 239 publications

(254 citation statements)

References 33 publications

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“…Both ER/ERLs and SERK1/SERK2/ SERK3/SERK4 are required for stomatal patterning (Shpak et al, 2005;Meng et al, 2015). EPF (EPIDERMAL PATTERNING FACTOR) small proteins trigger the interaction of ER/ERL with SERK1 to SERK4, while the TOO MANY MOUTHS-SERK association is independent on EPFs (Lee et al, 2015;Meng et al, 2015). Loss-of-function mutants of SERK1 to SERK4 genes exhibit the same phenotype in floral organ abscission as that of hae hsl2 and ida (inflorescence deficient in abscission) mutants (Butenko et al, 2003;Cho et al, 2008;Meng et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Two SERK Receptor-Like Kinases Interact with EMS1 to Control Anther Cell Fate Determination

Wang

Huang

et al. 2016

Plant Physiol.

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Cell signaling pathways mediated by leucine-rich repeat receptor-like kinases (LRR-RLKs) are essential for plant growth, development, and defense. The EMS1 (EXCESS MICROSPOROCYTES1) LRR-RLK and its small protein ligand TPD1 (TAPETUM DETERMINANT1) play a fundamental role in somatic and reproductive cell differentiation during early anther development in Arabidopsis (Arabidopsis thaliana). However, it is unclear whether other cell surface molecules serve as coregulators of EMS1. Here, we show that SERK1 (SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1) and SERK2 LRR-RLKs act redundantly as coregulatory and physical partners of EMS1. The SERK1/2 genes function in the same genetic pathway as EMS1 in anther development. Bimolecular fluorescence complementation, Förster resonance energy transfer, and coimmunoprecipitation approaches revealed that SERK1 interacted biochemically with EMS1. Transphosphorylation of EMS1 by SERK1 enhances EMS1 kinase activity. Among 12 in vitro autophosphorylation and transphosphorylation sites identified by tandem mass spectrometry, seven of them were found to be critical for EMS1 autophosphorylation activity. Furthermore, complementation test results suggest that phosphorylation of EMS1 is required for its function in anther development. Collectively, these data provide genetic and biochemical evidence of the interaction and phosphorylation between SERK1/2 and EMS1 in anther development.

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Section: Discussionmentioning

confidence: 99%

Two SERK Receptor-Like Kinases Interact with EMS1 to Control Anther Cell Fate Determination

Wang

Huang

et al. 2016

Plant Physiol.

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“…Moreover, A N data also are correlated directly with iWUE values calculated in the same plants. We also evaluated the same plants for the expression of the tomato genes homologous to those involved in the regulation of stomatal development in Arabidopsis: LeEPFL9, also known as STOMAGEN (Sugano et al, 2010), and genes encoding EPF1 and EPF2, two intercellular signaling factors that function as antagonists of LeEPFL9, since they act as negative regulators of stomatal development (Lee et al, 2015).…”

Section: Stomatal Density and Expression Of Genes Involved In Stomatamentioning

confidence: 99%

Insights On the Impact of Arbuscular Mycorrhizal Symbiosis On Tomato Tolerance to Water Stress

et al. 2016

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Arbuscular mycorrhizal (AM) fungi, which form symbioses with the roots of the most important crop species, are usually considered biofertilizers, whose exploitation could represent a promising avenue for the development in the future of a more sustainable next-generation agriculture. The best understood function in symbiosis is an improvement in plant mineral nutrient acquisition, as exchange for carbon compounds derived from the photosynthetic process: this can enhance host growth and tolerance to environmental stresses, such as water stress (WS). However, physiological and molecular mechanisms occurring in arbuscular mycorrhiza-colonized plants and directly involved in the mitigation of WS effects need to be further investigated. The main goal of this work is to verify the potential impact of AM symbiosis on the plant response to WS. To this aim, the effect of two AM fungi (Funneliformis mosseae and Rhizophagus intraradices) on tomato (Solanum lycopersicum) under the WS condition was studied. A combined approach, involving ecophysiological, morphometric, biochemical, and molecular analyses, has been used to highlight the mechanisms involved in plant response to WS during AM symbiosis. Gene expression analyses focused on a set of target genes putatively involved in the plant response to drought, and in parallel, we considered the expression changes induced by the imposed stress on a group of fungal genes playing a key role in the water-transport process. Taken together, the results show that AM symbiosis positively affects the tolerance to WS in tomato, with a different plant response depending on the AM fungi species involved.

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“…Polyploid plants often have negative relationships between stomata size and stomata density (Khazaei et al 2010;Miller et al 2012), and the regulation mechanisms between stomata size and stomata density are not known yet. Recent study indicated that stomata density was controlled by stomagen in Arabidopsis (Lee et al 2015). Increased numbers of chromosomes in polyploids often changes a lot of gene expressions, resulting in phenotypic alteration including stomata density in plant (Comai 2005).…”

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confidence: 99%

Induction of tetraploid hardy rubber tree, <i>Eucommia ulmoides</i>, and phenotypic differences from diploid

Tokumoto

Kajiura

Takeno

et al. 2016

Plant Biotechnology

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Polyploid plants tend to have larger organs than diploids due to the doubling of their chromosome number. However, the enlarged regions, whether cells, tissues, or individuals differ depending on the plant species or taxon, as have metabolic changes. Eucommia ulmoides is a deciduous dioecious plant natively distributed in China that accumulates trans-1,4-polyisoprene (TPI) in laticifers throughout its tissues. To induce tetraploids of E. ulmoides, colchicine treatment time and concentration were assessed for ability to obtain tetraploids, and the resulting plants were analyzed for phenotypic differences from diploids with respect to individual size, 16 leaf attributes, sizes of three cell types (epidermis, laticifer, and parenchyma), and TPI content and molecular weight. Effective conditions for obtaining tetraploids were 0.05% colchicine for 48 h, which led to obtaining a total of 9 tetraploids. The tetraploids showed larger stomata size but lower stomata density than diploids. Significant differences in the mean values of other attributes including leaf size, cell size, and TPI content of tetraploids could not be detected between tetraploids and diploids, suggesting that E. ulmoides is less affected by gene doubling than other plant species, and that tetraploid individuals might not have a tendency to increase their biomass.

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Competitive binding of antagonistic peptides fine-tunes stomatal patterning

Cited by 239 publications

References 33 publications

Two SERK Receptor-Like Kinases Interact with EMS1 to Control Anther Cell Fate Determination

Two SERK Receptor-Like Kinases Interact with EMS1 to Control Anther Cell Fate Determination

Insights On the Impact of Arbuscular Mycorrhizal Symbiosis On Tomato Tolerance to Water Stress

Induction of tetraploid hardy rubber tree, <i>Eucommia ulmoides</i>, and phenotypic differences from diploid

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