[Coordination effect between vapor water loss through plant stomata and liquid water supply in soil-plant-atmosphere continuum (SPAC): a review].
Some important phenomena and behaviors concerned with the coordination effect between vapor water loss through plant stomata and liquid water supply in SPAC were discussed in this paper. A large amount of research results showed that plants show isohydric behavior when the plant hydraulic and chemical signals cooperate to promote the stomatal regulation of leaf water potential. The feedback response of stomata to the change of environmental humidity could be used to explain the midday depression of stomatal conductance and photosynthesis under drought condition, and also, to interpret the correlation between stomatal conductance and hydraulic conductance. The feed-forward response of stomata to the change of environmental humidity could be used to explain the hysteresis response of stomatal conductance to leaf-atmosphere vapor pressure deficit. The strategy for getting the most of xylem transport requires the rapid stomatal responses to avoid excess cavitation and the corresponding mechanisms for reversal of cavitation in short time.
Liu
Li-Min
LM
Shenyang Agricultural University, Shenyang 110161, China. l_limin@hotmail.com
Qi
Hua
H
Luo
Xin-Lan
XL
Zhang
Xuan
X
D001272:Atmosphere; D017753:Ecosystem; D010788:Photosynthesis / Q000502:physiology*; D018515:Plant Leaves / Q000166:cytology / Q000378:metabolism / Q000502:physiology*; D018526:Plant Transpiration / Q000502:physiology*; D012987:Soil / Q000032:analysis*; D014867:Water / Q000378:metabolism*
D012987:Soil; D014867:Water