Study on the organic acid-metabolizing enzymes in Robertson navel orange during the fruit development
2006
Gong Ronsgao | Lü Xiulan | Zhang Guanslun
chinois. 以罗伯逊脐橙为试材，研究了脐橙果实有机酸代谢相关酶的活性变化动态，及其与果实有机酸积累关系，旨在探索影响脐橙果实有机酸含量的重要酶。结果表明：果实有机酸的积累期，CS、PEPC活性随有机酸积累而增大，并呈显著正相关；有机酸降解期，IDH的活性与有机酸含量呈极显著负相关；而MDH和ACO对酸含量的影响小。因而可认为PEPC和CS是影响果实有机酸合成的重要酶。而影响有机酸分解的重要酶则是IDH。
Afficher plus [+] Moins [-]anglais. Robertson Navel＇orange （Citrus sinesis Osb. ） fruits were used to study organic acid-metabolizing enzymes during the fruit development, especially the changes in activities of citrate synthase （CS）, phosphoenolpyruvateeaxboxylase （PEPC）, cis-aconitase （ACO）, isocitrate dehydrogenase （IDH） and malate dehydrogenase （MDH）, in order to find out the key enzymes which influences the organic acid content in navel fruit. The results show that CS and PEPC play an important role in organic acid accumulation during the early stage of the fruit development, while IDH is the key enzyme that cleave citrate from 120 days after full bloom to the fruit ripening. However, MDH and CAO axe not the key enzymes that influence the organic acid accumulation.
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