Hormonal Profiles in Summer and Winter Shoot Apices of Five Aquatic Plant Species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F25%3A00639419" target="_blank" >RIV/61389030:_____/25:00639419 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/25:00639419 RIV/61989592:15310/25:73634377

Result on the web

<a href="https://doi.org/10.1111/ppl.70527" target="_blank" >https://doi.org/10.1111/ppl.70527</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ppl.70527" target="_blank" >10.1111/ppl.70527</a>

Result language

angličtina

Original language name

Hormonal Profiles in Summer and Winter Shoot Apices of Five Aquatic Plant Species

Original language description

We compared the hormonal levels in summer and winter shoot apices/fronds of five aquatic species with insufficiently known overwintering strategies with their dark respiration rates as a criterion for dormancy. Miniature samples of shoot apices/fronds were extracted and analyzed by UHPLC-ESI-MS/MS. Dark respiration of summer and winter shoot apices was measured using a Clark-type oxygen sensor. A simple growth test was conducted on Lemna trisulca and Ricciocarpos natans to ascertain their strength of dormancy. Variable respiration rates of turions and winter apices/fronds revealed marked interspecific differences in levels of dormancy. The winter total cytokinin (CK) content usually resembled the summer one or was significantly lower, with great interspecific differences. Active CKs decreased by about two times in winter. Also, the content of the active auxin IAA was usually lower than in summer, but in L. trisulca it rose 4.5 times. Increased abscisic acid (ABA) winter content (11–3124 nmol kgDW−1) confirmed its significant accumulation in four species studied, except for Utricularia inflata. Generally, mature dormant turions have low dark respiration rates, in comparison with non-dormant winter shoot apices/fronds, at least on a dry-weight basis. Deviations from the rule correlate with the power of turion dormancy, which is variable among species and represents a continuous gradient from dormancy to quiescence. Concerning overwintering strategies in aquatic plants, the hormonal regulation of the formation of either turions or non-dormant winter apices is not universal.

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

—

OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Physiologia Plantarum

ISSN

0031-9317

e-ISSN

1399-3054

Volume of the periodical

177

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

e70527

UT code for WoS article

001574516400001

EID of the result in the Scopus database

2-s2.0-105016470685