About: Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit

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About: Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Pearl millet genotypes carrying a terminal drought tolerance QTL have a lower transpiration rate (Tr) under well-watered conditions than sensitive lines. Here experiments were carried out to test whether this relates to leaf ABA at high VPD, and whether that leads to transpiration efficiency differences. Most genotypic differences were found under well-watered conditions. ABA levels under these conditions were higher in tolerant genotypes, including NIL-QTLs, and ABA did not increase under water stress. Well-watered Tr was lower in tolerant genotypes at all VPD levels. It is concluded that two water-saving mechanisms may operate under well-watered conditions in tolerant pearl millet: a low Tr even at low VPD, which may relate to leaf ABA; and a sensitivity to higher VPD that further restricts Tr, suggesting the involvement of hydraulic signals. Both traits could contribute to absolute water saving. This deserves consideration in the breeding of terminal drought-tolerant lines. Pearl millet genotypes carrying a terminal drought tolerance QTL have a lower transpiration rate (Tr) under well-watered conditions than sensitive lines. Here experiments were carried out to test whether this relates to leaf ABA at high VPD, and whether that leads to transpiration efficiency differences. Most genotypic differences were found under well-watered conditions. ABA levels under these conditions were higher in tolerant genotypes, including NIL-QTLs, and ABA did not increase under water stress. Well-watered Tr was lower in tolerant genotypes at all VPD levels. It is concluded that two water-saving mechanisms may operate under well-watered conditions in tolerant pearl millet: a low Tr even at low VPD, which may relate to leaf ABA; and a sensitivity to higher VPD that further restricts Tr, suggesting the involvement of hydraulic signals. Both traits could contribute to absolute water saving. This deserves consideration in the breeding of terminal drought-tolerant lines. (en)
Title	Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit (en)
skos:prefLabel	Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit Terminal drought-tolerant pearl millet [Pennisetum glaucum (L.) R. Br.] have high leaf ABA and limit transpiration at high vapour pressure deficit (en)
skos:notation	RIV/00216208:11310/10:10081155!RIV11-MSM-11310___
http://linked.open...avai/riv/aktivita	V Z
http://linked.open...avai/riv/aktivity	V, Z(MSM0021620858)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kočová, Marie Kholová, Jana
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	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	292383
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/10:10081155
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	vapour pressure deficit; transpiration efficiency; transpiration rate; terminal drought stress; pearl millet; ABA (en)
http://linked.open.../riv/klicoveSlovo	terminal drought stress transpiration efficiency vapour pressure deficit ABA transpiration rate pearl millet
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[BB34D082EF8F]
http://linked.open...i/riv/nazevZdroje	Journal of Experimental Botany
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	61
http://linked.open...iv/tvurceVysledku	Kholová, Jana Kočová, Marie Vadez, Vincent Hash, C. Tom. Kumar, P. Lava. Yadav, Rattan S.
http://linked.open...ain/vavai/riv/wos	000275567500016
http://linked.open...n/vavai/riv/zamer	Signaling and cellular response mechanisms
issn	0022-0957
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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