[High temperature stres on crop pollen: a review].
High temperature has already become a noticeable environmental factor for crop production, while plant pollen was the most sensitive organ to high temperature stress. In this paper, the cytological, physiological, and molecular biological studies on the high temperature stress on crop pollen were reviewed, aimed to provide ideas for maintaining high productive ability of crops under high temperature stress. The cytological effects of high temperature on crop pollen included the changes of arrangement patterns of rough endoplasmic reticulum in tapetum cells, the irregularity of vascular bundle sheath cells in connective tissue, and the reduction of vesicle production by dictyosomes of pollen tube, etc.; physiological effects involved the incapacity of timely recovery of Ca2+ homeostasis, the changes of growth regulators contents, and the slowing down of carbohydrate metabolism, etc.; and molecular biological effects manifested in the insufficient induction of heat shock proteins and the inhibition of other functional genes for pollen development, etc.
College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China. lmhdick@163.com
Ming-Hui
MH
Lu
Zhen-Hui
ZH
Gong
Ru-Gang
RG
Chen
Wei
W
Huang
Da-Wei
DW
Li
D002118:Calcium / Q000378:metabolism; D018556:Crops, Agricultural / Q000254:growth & development / Q000502:physiology*; D006358:Hot Temperature; D010937:Plant Growth Regulators / Q000378:metabolism; D011058:Pollen / Q000378:metabolism / Q000502:physiology*; D013312:Stress, Physiological / Q000502:physiology*
D010937:Plant Growth Regulators; D002118:Calcium