A novel histidine kinase gene, ZmHK9, mediate drought tolerance through the regulation of stomatal development in Arabidopsis

Wang, Bo; Guo, Bin; Xie, Xiaodong; Yao, Yingyin; Peng, Huiru; Xie, Chaojie; Zhang, Yirong; Sun, Qixin

doi:10.1016/j.gene.2012.04.012

Cited by 18 publications

(14 citation statements)

References 37 publications

(42 reference statements)

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“…Thus, control of stomatal density and stomatal index is an important physiological role of AHK1. A role of His kinases in stomatal density was also found by Wang et al (2012), who observed that ectopic expression of a maize (Zea mays) His kinase, ZmHK9, decreased stomatal density and also allowed plants to survive longer periods of water withholding. Interestingly, we also observed substantial differences in stomatal density between the two accessions used in this study, Nos-0 and Col-0.…”

Section: Ahk1 Is a Regulator Of Stomatal Density And Dehydration Avoimentioning

confidence: 56%

Role of the Putative Osmosensor Arabidopsis Histidine Kinase1 in Dehydration Avoidance and Low-Water-Potential Response

2012

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The molecular basis of plant osmosensing remains unknown. Arabidopsis (Arabidopsis thaliana) Histidine Kinase1 (AHK1) can complement the osmosensitivity of yeast (Saccharomyces cerevisiae) osmosensor mutants lacking Synthetic Lethal of N-end rule1 and SH3-containing Osmosensor and has been proposed to act as a plant osmosensor. We found that ahk1 mutants in either the Arabidopsis Nossen-0 or Columbia-0 background had increased stomatal density and stomatal index consistent with greater transpirational water loss. However, the growth of ahk1 mutants was not more sensitive to controlled moderate low water potential (c w ) or to salt stress. Also, ahk1 mutants had increased, rather than reduced, solute accumulation across a range of low c w severities. ahk1 mutants had reduced low c w induction of D 1 -Pyrroline-5-Carboxylate Synthetase1 (P5CS1) and 9-cisEpoxycarotenoid Dioxygenase3, which encode rate-limiting enzymes in proline and abscisic acid (ABA) synthesis, respectively. However, neither Pro nor ABA accumulation was reduced in ahk1 mutants at low c w . P5CS1 protein level was not reduced in ahk1 mutants. This indicated that proline accumulation was regulated in part by posttranscriptional control of P5CS1 that was not affected by AHK1. Expression of AHK1 itself was reduced by low c w , in contrast to previous reports. These results define a role of AHK1 in controlling stomatal density and the transcription of stress-responsive genes. These phenotypes may be mediated in part by reduced ABA sensitivity. More rapid transpiration and water depletion can also explain the previously reported sensitivity of ahk1 to uncontrolled soil drying. The unimpaired growth, ABA, proline, and solute accumulation of ahk1 mutants at low c w suggest that AHK1 may not be the main plant osmosensor required for low c w tolerance.

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Section: Ahk1 Is a Regulator Of Stomatal Density And Dehydration Avoimentioning

confidence: 56%

Role of the Putative Osmosensor Arabidopsis Histidine Kinase1 in Dehydration Avoidance and Low-Water-Potential Response

2012

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“…Vogt (2010) found that aromatic amino acids (AAA) derived specialized metabolites play important roles in various aspect of plant life, such as growth, development, reproduction, defense and environmental responses. Several His kinase genes have also been reported to be involved in drought response in Arabidopsis (Tran et al, 2007;Wang et al, 2012;Muñiz et al, 2010). From this reports and results, His might induce synthsis of cytokinins in Eustoma and resulted in growth improvements.…”

Section: Discussionmentioning

confidence: 78%

Effects of amino acids on the growth and flowering of Eustoma grandiflorum under autotoxicity in closed hydroponic culture

Mondal

Asaduzzaman

Tanaka

et al. 2015

Scientia Horticulturae

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“…10 A maize histidine kinase gene, ZmHK9, was found to mediate drought tolerance through the regulation of stomatal opening in Arabidopsis. 15 In rice, a multi-stress inducible histidine kinase, also seems to function as an osmosensor (our unpublished data). Thus sensing of changes in osmolarity seems to be mediated by HKs in plants.…”

Section: Downloaded By [University Of Nebraska Lincoln] At 01:15 04 mentioning

confidence: 83%

“…1,[9][10][11][12][13][14] Recently, several HK genes have also been reported to be involved in drought response in Arabidopsis. 10, 15,16 Broadly speaking, HKs can be grouped into two categories; ethylene receptors and non-ethylene receptors. The latter includes cytokinin receptors, osmosensors and other histidine kinases whose functions are yet to be identified.…”

Section: Histidine Kinases In Plantsmentioning

confidence: 99%

Histidine kinases in plants

Nongpiur

Soni

Karan

et al. 2012

Plant Signaling & Behavior

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Two-component signaling pathways involve sensory histidine kinases (HK), histidine phosphotransfer proteins (HpT) and response regulators (RR). Recent advancements in genome sequencing projects for a number of plant species have established the TCS family to be multigenic one. In plants, HKs operate through the His-Asp phosphorelay and control many physiological and developmental processes throughout the lifecycle of plants. Despite the huge diversity reported for the structural features of the HKs, their functional redundancy has also been reported via mutant approach. Several sensory HKs having a CHASE domain, transmembrane domain(s), transmitter domain and receiver domain have been reported to be involved in cytokinin and ethylene signaling. On the other hand, there are also increasing evidences for some of the sensory HKs to be performing their role as osmosensor, clearly indicating toward a possible cross-talk between hormone and stress responsive cascades. In this review, we bring out the latest knowledge about the structure and functions of histidine kinases in cytokinin and ethylene signaling and their role(s) in development and the regulation of environmental stress responses.

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A novel histidine kinase gene, ZmHK9, mediate drought tolerance through the regulation of stomatal development in Arabidopsis

Cited by 18 publications

References 37 publications

Role of the Putative Osmosensor Arabidopsis Histidine Kinase1 in Dehydration Avoidance and Low-Water-Potential Response

Role of the Putative Osmosensor Arabidopsis Histidine Kinase1 in Dehydration Avoidance and Low-Water-Potential Response

Effects of amino acids on the growth and flowering of Eustoma grandiflorum under autotoxicity in closed hydroponic culture

Histidine kinases in plants

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