Drought stress response in maize: molecular, morphological and physiological analysis of tolerant and sensitive genotypes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43917800" target="_blank" >RIV/62156489:43210/20:43917800 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00020699:_____/20:N0000079

Výsledek na webu

<a href="https://journals-crea.4science.it/index.php/maydica/article/view/2024/1264" target="_blank" >https://journals-crea.4science.it/index.php/maydica/article/view/2024/1264</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Drought stress response in maize: molecular, morphological and physiological analysis of tolerant and sensitive genotypes

Popis výsledku v původním jazyce

The aim of this work was to develop a physiological method based on transpiration in combination with molecular methods, i.e., dehydrin gene expression analysis, for identifying the reactions of maize (Zea mays L.) plants that display different levels of tolerance to drought stress during the generative growth stage. Drought stress was induced in two genotypes, 2087 and 2637, by four irrigation treatments. The rate of transpiration and the ex-pression of the dehydrin genes ZmDHN1 and ZmDHN2 were dependent on genotype and duration and intensity of stress. The yield components were affected by the level of dehydrin gene expression and transpiration rate. Compared with genotype 2637, genotype 2087 a) maintained higher transpiration intensity, even under strong drought stress conditions, b) exhibited an earlier onset and a higher level of expression both at a lower stress intensity and during the initial phases of the stress reaction, c) showed higher values of yield components, and d) was characterized by a lower water-use efficiency of cob yield. Drought tolerance is of increasing importance and is one of the breeding targets in maize. However, traditional breeding methods have numerous limitations. The simultaneous use of new molecular genetic techniques and physiological methods could therefore help to elucidate the genetic and physiological basis of plant responses to drought stress and provide more accurate evaluation for screening parental breeding material.

Název v anglickém jazyce

Drought stress response in maize: molecular, morphological and physiological analysis of tolerant and sensitive genotypes

Popis výsledku anglicky

The aim of this work was to develop a physiological method based on transpiration in combination with molecular methods, i.e., dehydrin gene expression analysis, for identifying the reactions of maize (Zea mays L.) plants that display different levels of tolerance to drought stress during the generative growth stage. Drought stress was induced in two genotypes, 2087 and 2637, by four irrigation treatments. The rate of transpiration and the ex-pression of the dehydrin genes ZmDHN1 and ZmDHN2 were dependent on genotype and duration and intensity of stress. The yield components were affected by the level of dehydrin gene expression and transpiration rate. Compared with genotype 2637, genotype 2087 a) maintained higher transpiration intensity, even under strong drought stress conditions, b) exhibited an earlier onset and a higher level of expression both at a lower stress intensity and during the initial phases of the stress reaction, c) showed higher values of yield components, and d) was characterized by a lower water-use efficiency of cob yield. Drought tolerance is of increasing importance and is one of the breeding targets in maize. However, traditional breeding methods have numerous limitations. The simultaneous use of new molecular genetic techniques and physiological methods could therefore help to elucidate the genetic and physiological basis of plant responses to drought stress and provide more accurate evaluation for screening parental breeding material.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Maydica

ISSN

0025-6153

e-ISSN

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Svazek periodika

65

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

9

Strana od-do

"Nestrankovano"

Kód UT WoS článku

000588508600001

EID výsledku v databázi Scopus

2-s2.0-85084697844