The expression of dehydrin genes and the intensity of transpiration in drought-stressed maize plants

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F17%3A43912105" target="_blank" >RIV/62156489:43210/17:43912105 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1556/0806.45.2017.017" target="_blank" >https://doi.org/10.1556/0806.45.2017.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1556/0806.45.2017.017" target="_blank" >10.1556/0806.45.2017.017</a>

Result language

angličtina

Original language name

The expression of dehydrin genes and the intensity of transpiration in drought-stressed maize plants

Original language description

The stress reaction of maize plants was evaluated in relation to drought stress intensity and to growth stages by assessing the transpiration intensity and the expression of two dehydrin genes, DHN1 and DHN2. The maize plants were grown under four different watering conditions: Well-watered (control), mild stress, moderate stress and high stress. The sap flow values were taken as an indicator of plant stress reactions at the transpiration level. A significant correlation between the average diurnal values of sap flow and the volumetric soil moisture appeared only for the moderate stress condition (R = 0.528) and for the high stress condition (R = 0.395). Significant increases in the expression of DHN1 and DHN2 (DHN1 = 105-fold and DHN2 = 103-fold) were observed primarily for the high stress condition compared to the control. Differences in the stress reactions at the DHN1 gene expression level were detected for all the experimental drought stress conditions. A relatively close relationship between the levels of expression of both genes and the values of the sap flow was observed during the initial stage of the stress (R =-0.895; R =-0.893). The severity of water stress and transpiration intensity significantly affected certain biometric and yield parameters of maize. Higher DHN genes expression at the ripening stage was related to lower grain and dry biomass yield. The results indicated that DHN gene expression assessment in maize and evaluation of the changes in transpiration expressed by the sap flow could be considered appropriate indicators of stress intensity while the DHN gene expression assessment appeared to be more sensitive than evaluation of the changes in transpiration, mainly in the initial phases of stress response.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/QJ1510098" target="_blank" >QJ1510098: New breeding lines of winter wheat for a more efficient use of inputs and with higher stress resistance</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Cereal Research Communications

ISSN

0133-3720

e-ISSN

—

Volume of the periodical

45

Issue of the periodical within the volume

3

Country of publishing house

HU - HUNGARY

Number of pages

14

Pages from-to

355-368

UT code for WoS article

000407673200001

EID of the result in the Scopus database

2-s2.0-85027448877