Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Does abscisic acid play a stress physiological role in maize plants growing in heavily compacted soil ?
AU - Hartung, W.
AU - Zhang, J. H.
AU - Davies, W. J.
PY - 1994
Y1 - 1994
N2 - When roots of young maize seedlings are forced to penetrate soil of high mechanical impedance, abscisic acid (ABA) concentration in the xylem sap can be increased by up to 10-fold. After a further 8-10 d, however, this increase disappears nearly completely. Leaf growth rate was inhibited in plants in compacted soil and showed a good relationship with ABA concentration in the xylem. The early large increase of ABA in xylem coincided with the reduction of leaf water potential and turgor which also gradually disappeared when plants became established. With only one layer of compacted soil in the middle of the soil profile, a similar situation to that in compacted field plots, plant leaf growth was not affected as long as the soil was well watered.
AB - When roots of young maize seedlings are forced to penetrate soil of high mechanical impedance, abscisic acid (ABA) concentration in the xylem sap can be increased by up to 10-fold. After a further 8-10 d, however, this increase disappears nearly completely. Leaf growth rate was inhibited in plants in compacted soil and showed a good relationship with ABA concentration in the xylem. The early large increase of ABA in xylem coincided with the reduction of leaf water potential and turgor which also gradually disappeared when plants became established. With only one layer of compacted soil in the middle of the soil profile, a similar situation to that in compacted field plots, plant leaf growth was not affected as long as the soil was well watered.
KW - Mechanical impedance
KW - Root
KW - Compaction
KW - Soils
KW - Growth
KW - Water potential
KW - Turgor
KW - Morphological change
KW - Plant leaf
KW - Zea mays
KW - Abscisic acid
KW - Gramineae
KW - Monocotyledones
KW - Angiospermae
KW - Spermatophyta
KW - Stress
KW - Cereal crop
KW - Sesquiterpenes
KW - Plant growth substance
M3 - Journal article
VL - 45
SP - 221
EP - 226
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
SN - 1460-2431
IS - 2
ER -