MEYVE VE SEBZELERDE YARA METABOLİZMASI VE SİNYAL İLETİMİ

Benzer koşullar altında taze kesilmiş meyve ve sebzeler kesilmemiş olanlara göre daha hızlı doku yumuşaması ve bozulma gösterirler. Yapılan çalışmalar bu hızlı bozulma ve yumuşamada membrane yağlarında ve lipaz enzimlerinin aktivitelerindeki değişimlerin önemli rol oynadığı ortaya konulmuştur. Bu derlemede, yaralanmış ve diğer meyve ve sebze dokularındaki membrane yağlarının parçalanmasını ve/veya modifikasyonunu etkileyen faktörler hakkında yapılan son çalışmalar ele alınmıştır. Buna ilaveten, fosfolipit temelli sinyaller hususundaki son gelişmeler, uyarılan fosfolipazlar ve lipid kinazlar, ve onların ürettiği sinyaller, bunların bağlandıkları bölgeler, bunları içeren alt kademelerdeki hedefler ve kontrol ettikleri olaylar tartışılmaktadır.

Anahtar Kelimeler:

Yaralanma, Sinyal iletimi, Meyve, Sebze, Yağlar

WOUND METABOLISM AND WOUND SIGNALLING IN FRUITS AND VEGETABLES

Fresh-cut fruits and vegetables demonstrate rapid tissue softening and deterioration as compared to intact fruits and vegetables held in similar conditions. Studies have shown a significant role of changes in membrane lipids and lipase activities in the rapid softening and deterioration of fresh-cut (wounded) fruit and vegetables. In this review, we evaluate recent findings on the factors influencing the modifications or degradations of membrane lipids in wounded fruit and other tissues. Moreover, the latest developments in phospholipid-based signaling, including the lipid kinases and phospholipases that are activated, the signals they produce, the domains that bind them, the downstream targets that contain them and the processes they control are discussed.

Keywords:

Wounding, Signalling, Fruit, Vegetable, Lipids,

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