Plants under Climatic Stress: III. Low Temperature, High Light Effects on Photosynthetic Products
AUTOR(ES)
Taylor, A. O.
RESUMO
An investigation has been made of the combined effects of low temperature and high light on the level of several photosynthetic products in the leaves of a group of plants differing widely in their tolerance to this stress. Starch levels in these plants after chilling are dependent on the time of day that temperatures are lowered and seem related to rates of CO2 assimilation under this stress. Prolonged low-temperature, high-light treatment (10 C at 160 wm−2) of Sorghum bicolor induced a rapid starch hydrolysis after a lag of some 24 hours. Differing rates of starch loss at the cellular level and a rapid migration of chloroplasts toward the base of upper mesophyll cells were also seen in leaves of this stress-sensitive species.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366055Documentos Relacionados
- Plants under Climatic Stress: I. Low Temperature, High Light Effects on Photosynthesis
- Plants under Climatic Stress: II. Low Temperature, High Light Effects on Chloroplast Ultrastructure
- Plants under Climatic Stress: V. Chilling and Light Effects on Radiocarbon Exchange between Photosynthetic Intermediates of Sorghum
- Plants under Climatic Stress: VI. Chilling and Light Effects on Photosynthetic Enzymes of Sorghum and Maize 1
- On the mass culture of algae. III. Light diffusers; high vs low temperature Chlorellas 12
