CLC number: Q89;Q94
On-line Access: 2024-08-27
Received: 2023-10-17
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LI Yan, PAN Hai-chun, LI De-quan. Responses of ABA and CTK to soil drought in leafless and leafy apple tree[J]. Journal of Zhejiang University Science A, 2003, 4(1): 101-108.
@article{title="Responses of ABA and CTK to soil drought in leafless and leafy apple tree",
author="LI Yan, PAN Hai-chun, LI De-quan",
journal="Journal of Zhejiang University Science A",
volume="4",
number="1",
pages="101-108",
year="2003",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2003.0101"
}
%0 Journal Article
%T Responses of ABA and CTK to soil drought in leafless and leafy apple tree
%A LI Yan
%A PAN Hai-chun
%A LI De-quan
%J Journal of Zhejiang University SCIENCE A
%V 4
%N 1
%P 101-108
%@ 1869-1951
%D 2003
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2003.0101
TY - JOUR
T1 - Responses of ABA and CTK to soil drought in leafless and leafy apple tree
A1 - LI Yan
A1 - PAN Hai-chun
A1 - LI De-quan
J0 - Journal of Zhejiang University Science A
VL - 4
IS - 1
SP - 101
EP - 108
%@ 1869-1951
Y1 - 2003
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2003.0101
Abstract: The authors tested the contents of ABA (abscisic acid), ZR (zeatin riboside), DHZR (dihydrozeatin riboside) and iPA (isopentenyl adenosine) in leafless and leafy apple trees (Red Fuji/Malus micromalus Makino) during soil drought stress. ABA concentration in drought stressed leafless trees increased significantly compared to the controls. ABA both in roots and xylem rose steadily in the earlier drought stage, reaching a maximum of 1.46±0.35 nmol g-1FW and 117 nmol l-1 after the 8th day. Similar change patterns of ABA concentration was observed in the leafy trees during soil drought stress; ABA concentrations in roots and xylem sap increased and reached the maximum in the first three days; after 8th day, it decreased slightly, whereas leaf ABA concentration increased steadily in drought stressed plants throughout the duration of the experiment. Between drought stressed and control trees, no significant differences were observed in concentration of ZR and DHZR in both leafless and leafy trees; whereas iPA concentration of the drought stressed leafless and leafy plants decreased markedly in the later stage of drought. These results showed that endogenous ABA originated mainly from the roots in the earlier drought stage, and mainly from the leaves in the later drought stage. Total CTK showed no reduction in the earlier drought stage and decreased in the later drought stage.
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