2017
DOI: 10.1186/s12870-017-0999-1
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RhMKK9, a rose MAP KINASE KINASE gene, is involved in rehydration-triggered ethylene production in rose gynoecia

Abstract: BackgroundFlower opening is an important process in the life cycle of flowering plants and is influenced by various endogenous and environmental factors. Our previous work demonstrated that rose (Rosa hybrida) flowers are highly sensitive to dehydration during flower opening and the water recovery process after dehydration induced ethylene production rapidly in flower gynoecia. In addition, this temporal- and spatial-specific ethylene production is attributed to a transient but robust activation of the rose MA… Show more

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Cited by 20 publications
(8 citation statements)
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“…By contrast, BnaMKK4 only responded to cold stress, and BnaMKK5 did not respond to any of the stresses tested here, which demonstrated that MKKs genes have different patterns in stress response in different plant species. Furthermore, MKK9 plays a pivotal role in increasing alternative respiration in salt-treated Arabidopsis [74], and is also involved in rehydration-triggered ethylene production in roses (Rosa hybrida) [75]. Here, BnaMKK9.1 and BnaMKK9.2 were found to respond to cold, drought, and shading stress, and BnaMKK9.2 was downregulated under heat stress, suggesting that BnaMKK9.1 and BnaMKK9.2 may play important roles in response to abiotic stress.…”
Section: Functional Divergence Of Mkk and Mapk Genes In Response To Abiotic Stressesmentioning
confidence: 86%
“…By contrast, BnaMKK4 only responded to cold stress, and BnaMKK5 did not respond to any of the stresses tested here, which demonstrated that MKKs genes have different patterns in stress response in different plant species. Furthermore, MKK9 plays a pivotal role in increasing alternative respiration in salt-treated Arabidopsis [74], and is also involved in rehydration-triggered ethylene production in roses (Rosa hybrida) [75]. Here, BnaMKK9.1 and BnaMKK9.2 were found to respond to cold, drought, and shading stress, and BnaMKK9.2 was downregulated under heat stress, suggesting that BnaMKK9.1 and BnaMKK9.2 may play important roles in response to abiotic stress.…”
Section: Functional Divergence Of Mkk and Mapk Genes In Response To Abiotic Stressesmentioning
confidence: 86%
“…RhMKK9 is expressed 30 min after rehydration, but after 12 h the expression is almost undetectable. Chen and co-workers correlated these results for RhMKK9 with the expression and activity of RhMPK6 and RhACS1, and proposed that RhMKK9 functions as an activator of RhMPK6-RhACS1 ( Chen J. et al, 2017 ). However, whether RhMKK9 is actually an upstream activator of RhMPK6 in dehydration-dependent ET biosynthesis in rose gynoecia must be confirmed by further experiments.…”
Section: Mapk Kinase Cascades In Ethylene Biosynthesis and Signalingmentioning
confidence: 87%
“…It is well known that ET signaling is an indispensable element of the response to various stimuli (salt stress, pathogen attack, iron deficiency or dehydration) ( Kende, 1993 ; Xu J. et al, 2008 ; Han et al, 2010 ; Kazan, 2015 ; Tao et al, 2015 ; Ye et al, 2015 ; Chen J. et al, 2017 ; Khan et al, 2017 ). Salt stress stimulates ET biosynthesis which in turn activates other internal signals ( Wang et al, 2002 ; Xu J. et al, 2008 ; Dong et al, 2011 ).…”
Section: Mapk Kinase Cascades In Ethylene Biosynthesis and Signalingmentioning
confidence: 99%
“…Through signal transduction that follows, flower opening and senescence are controlled. Chen et al (2017) also notes that RhMKK9 is involved in dehydration-dependent ethylene biosynthesis, where it works on RhMPK6-RhACS1 [ 148 ]. In another study by Mitula et al (2015), MAPKKK18 was reported to control stomatal aperture and development [ 149 ].…”
Section: Genes Regulating Ros Homeostasis In Abiotic Stressmentioning
confidence: 99%