Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 509168
Title Gene expression and physiological responses associated to stomatal functioning in Rosa × hybrida grown at high relative air humidity
Author(s) Alves Carvalho, Dalia; Vasconcelos, Marta W.; Lee, Sangseok; Koning-Boucoiran, Carole F.S.; Vreugdenhil, Dick; Krens, Frans A.; Heuvelink, Ep; Pinto de Carvalho, Susana
Source Plant Science 253 (2016). - ISSN 0168-9452 - p. 154 - 163.
Department(s) Horticulture and Product Physiology Group
WUR Plant Breeding
Laboratory of Plant Physiology
WUR PB Siergewassen, Tissue Culture
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) Abscisic acid - Stomatal anatomy - Tetraploid roses - Vapor pressure deficit - Water loss

High relative air humidity (RH ≥ 85%) during growth disturbs stomatal functioning, resulting in excessive water loss in conditions of high evaporative demand. We investigated the expression of nine abscisic acid (ABA)-related genes (involved in ABA biosynthesis, oxidation and conjugation) and two non-ABA related genes (involved in the water stress response) aiming to better understand the mechanisms underlying contrasting stomatal functioning in plants grown at high RH. Four rose genotypes with contrasting sensitivity to high RH (one sensitive, one tolerant and two intermediate) were grown at moderate (62 ± 3%) or high (89 ± 4%) RH. The sensitive genotype grown at high RH showed a significantly higher stomatal conductance (gs) and water loss in response to closing stimuli as compared to the other genotypes. Moreover, high RH reduced the leaf ABA concentration and its metabolites to a greater extent in the sensitive genotype as compared to the tolerant one. The large majority of the studied genes had a relevant role on stomatal functioning (NCED1, UGT75B2, BG2, OST1, ABF3 and Rh-APX) while two others showed a minor contribution (CYP707A3 and BG1) and AAO3, CYP707A1 and DREB1B did not contribute to the tolerance trait. These results show that multiple genes form a highly complex regulatory network acting together towards the genotypic tolerance to high RH.

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