About: Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening

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About: Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening Goto Sponge NotDistinct Permalink

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Description	It was reported earlier that 7B-1 mutant in tomato (Solanum lycopersicum L.), an ABA overproducer, is defective in blue light (BL) signaling leading to BL-specific resistance to abiotic and biotic stresses. In this work, we examine responses of stomata to blue, red and white lights, fusicoccin, anion channel blockers (anthracene-9-carboxylic acid; 9-AC and niflumic acid; NIF) and ABA. Our results showed that the aperture of 7B-1 stomata does not increase in BL, suggesting that 7B-1 mutation impairs an element of BL signaling pathway involved in stomata]. opening. Similar stomatal responses of 7B-1 and wild type (WT) to fusicoccin or 9-AC points out that activity of H+-ATPase and 9-AC-sensitive anion channels per se is not likely affected by the mutation. Since 9-AC restored stomatal opening of 7B-1 in BL, it seems that 9-AC and BL could block similar type of anion channels. The stomata of both genotypes did not respond to NIF neither in darkness nor in any light conditions tested. In light, 9-AC but not NIF restored stomatal opening inhibited by ABA in WT and 7B-1. We suggest that in comparison to WT, the activity of S-type anion channels in 7B-1 is more promoted by increased ABA content, and less reduced by BL, because of the mutant resistance to BL. It was reported earlier that 7B-1 mutant in tomato (Solanum lycopersicum L.), an ABA overproducer, is defective in blue light (BL) signaling leading to BL-specific resistance to abiotic and biotic stresses. In this work, we examine responses of stomata to blue, red and white lights, fusicoccin, anion channel blockers (anthracene-9-carboxylic acid; 9-AC and niflumic acid; NIF) and ABA. Our results showed that the aperture of 7B-1 stomata does not increase in BL, suggesting that 7B-1 mutation impairs an element of BL signaling pathway involved in stomata]. opening. Similar stomatal responses of 7B-1 and wild type (WT) to fusicoccin or 9-AC points out that activity of H+-ATPase and 9-AC-sensitive anion channels per se is not likely affected by the mutation. Since 9-AC restored stomatal opening of 7B-1 in BL, it seems that 9-AC and BL could block similar type of anion channels. The stomata of both genotypes did not respond to NIF neither in darkness nor in any light conditions tested. In light, 9-AC but not NIF restored stomatal opening inhibited by ABA in WT and 7B-1. We suggest that in comparison to WT, the activity of S-type anion channels in 7B-1 is more promoted by increased ABA content, and less reduced by BL, because of the mutant resistance to BL. (en)
Title	Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening (en)
skos:prefLabel	Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening Spontaneous mutation 7B-1 in tomato impairs blue light-induced stomatal opening (en)
skos:notation	RIV/61389030:_____/13:00399105!RIV14-GA0-61389030
http://linked.open...avai/predkladatel	Ústav experimentální botaniky AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(ED0007/01/01), P(GAP501/10/0785), P(GD522/08/H003), S, Z(AV0Z50380511)
http://linked.open...iv/cisloPeriodika	2013
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Fellner, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav experimentální botaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	107181
http://linked.open...ai/riv/idVysledku	RIV/61389030:_____/13:00399105
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ABA; Anion-channel blocker; Blue light (en)
http://linked.open.../riv/klicoveSlovo	ABA Anion-channel blocker Blue light
http://linked.open...odStatuVydavatele	IE - Irsko
http://linked.open...ontrolniKodProRIV	[528377CB1686]
http://linked.open...i/riv/nazevZdroje	Plant Science
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Integration of doctoral studies in biochemistry, plant physiology and biophysics Centre of the Region Haná for Biotechnological and Agricultural Research Study of the blue light-less sensitive 7B-1 mutant: gaining new insights on the blue light-induced de-etiolation in tomato (Solanum lycopersicum L.)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	209
http://linked.open...iv/tvurceVysledku	Fellner, Martin Hlavinka, J. Nauš, J.
http://linked.open...ain/vavai/riv/wos	000321413100008
http://linked.open...n/vavai/riv/zamer	Mechanismy regulace růstu a vývoje rostlin na úrovni buněk, orgánů a celých organismů: fyziologické, genetické a molekulárně biologické základy
issn	0168-9452
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.plantsci.2013.04.010

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