Distinct non-photochemical quenching characteristics under constant and fluctuating light conditions: comparison between local and imported tobacco varietie

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73631353" target="_blank" >RIV/61989592:15310/25:73631353 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0981942825007673" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0981942825007673</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.plaphy.2025.110239" target="_blank" >10.1016/j.plaphy.2025.110239</a>

Result language

angličtina

Original language name

Distinct non-photochemical quenching characteristics under constant and fluctuating light conditions: comparison between local and imported tobacco varietie

Original language description

To explore the variation in adaptability to fluctuating light environments, the non-photochemical quenching (NPQ) characteristics of a local tobacco variety Xiaofeng 8 and a foreign introduced variety K326, under both constant and fluctuating light conditions were examined. The field experiment demonstrated that Xiaofeng 8 exhibited significantly stronger growth compared to K326, with the dry weight per plant and leaf area of Xiaofeng 8 increased by 28.26 % and 32.85 % compared with those of K326, respectively. Further, a distinct activation pattern of NPQ was detected in both varieties during the transition from dark to high light. Building on this finding, our subsequent tests proved that, in the high light intensity segments of a fluctuating light environment, Xiaofeng 8 exhibited a higher NPQ value compared to K326, indicating an enhanced capacity for dissipating excess light energy as thermal energy and mitigating the potential risk of photodamage. Subsequent analysis of the contents of violaxanthin (V), antheraxanthin (A), and zeaxanthin (Z) within the two varieties after high - light treatment has proved that Xiaofeng 8 has a superior ability to dissipate excess absorbed light energy under high - light conditions. This ability may contribute to its better growth under fluctuating light environments. Mutants defective in violaxanthin de-epoxidase (VDE) and zeaxanthin epoxidase (ZEP) were employed to examine their involvement in regulating plants growth under fluctuating light condition. The results showed that defects in these enzymes affected the NPQ response and reduced the growth rate of the mutants under fluctuating light conditions, suggesting its pivotal role of xanthophyll in regulating plant growth and adaptation to variable light environments. Collectively, these findings emphasize the importance of exploring genetic resources improving plant NPQ under fluctuating light conditions from both domestic and imported varieties, thereby providing promising targets for selecting and breeding new crop varieties with improved yield.

Czech name

—

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

—

OECD FORD branch

10610 - Biophysics

Project

<a href="/en/project/EH23_021%2F0008909" target="_blank" >EH23_021/0008909: Interdisciplinary approaches for the development and application of new materials in industrial, agricultural and medical practice</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

PLANT PHYSIOLOGY AND BIOCHEMISTRY

ISSN

0981-9428

e-ISSN

1873-2690

Volume of the periodical

228

Issue of the periodical within the volume

NOV

Country of publishing house

FR - FRANCE

Number of pages

12

Pages from-to

"110239-1"-"110239-12"

UT code for WoS article

001535187400001

EID of the result in the Scopus database

2-s2.0-105010940177