TY  - BOOK
AU  - Roca,M.
AU  - Mínguez-Mosquera,M.I.
TI  - Chlorophyll Catabolism Pathway in Fruits of Capsicum annuum (L.): Stay-Green versus Red Fruits
KW  - CAPSICUM ANNUUM (L.)
KW  - CHLOROPHYLL CATABOLISM
KW  - CHLOROPHYLL CATABOLITES FRUITS
KW  - PEPPER
KW  - STAY GREEN
N2  - The aim of the present study is to investigate the chlorophyll catabolism pathway of wild-type red and stay-green mutants of Capiscum annuum (L.)fruits. In the wild-type red lines chlorophyll catabolism is concomitant with the start of carotenogenesis, whereas in the stay-green mutant lines the chlorophylls coexist with that process, even in over-ripe fruit. During the first stages of ripening, the chlorophyll a/chlorophyll b ratio is similar for both genotypes, but as ripening proceeds, the ratio in the stay-green lines becomes very high as a result of a blocked degradation of chlorophyll a while chlorophyll b is degraded at a normal rate. The absence of dephytylated chlorophylls in the wild-type lines distinguishes these from the mutant lines, in which there is a sequential accumulation of chlorophyllide a and pheophorbide a. Allomerized chlorophylls 132-OH-chlorophyll a and b)have also been identified in the catabolic process of the mutant lines, but are absent from the wild type. Consequently, an alteration in pheophorbide a oxygenase (PaO)activity seems to be responsible for the stay-green genotype in the lines of pepper analyzed in this study
UR  - https://drive.google.com/file/d/1uMyK5hHyQ6QpyPxgxsFZmSa5_4yGwHT2/view?usp=drivesdk
ER  -