Changes In Proteolytic Enzyme Activity During Aging Of Wheat Flag Leaves
Keywords
Wheat, Flag Leaf, Aging, Proteolytic Enzyme, Rubpcase
Abstract
The changes in proteolytic enzyme activity during aging of flag leaves of Yangmai No. 5 and wild emmer wheat were studied. The results show that the changes in proteolytic enzyme activity after the flag leaves of the two varieties of wheat are fully developed can be clearly distinguished into a low-value stable period and a rapid-rising period, which respectively correspond to the slow-drop period and rapid-drop period of chlorophyll and the high-value sustained period and high-value duration period of photosynthetic rate. Rapid descent period. In the low value stable period, the proteolytic enzyme activity fluctuates within a low level range; in the rapid rising period, the enzyme activity increases rapidly. At the same time, the total soluble protein and RuBPCase protein contents decreased relatively slowly during the low value stable period, while they decreased rapidly during the rapid increase period. It is suggested that proteolytic enzymes are closely related to photosynthetic function decline and leaf aging.
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Original research done by College of Science, Nanjing Agricultural University, Department of Agricultural Sciences, College of Science, Nanjing Agricultural University
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