Cell wall-related genes studies on peach cultivars with differential susceptibility to woolliness: looking for candidates as indicators of chilling tolerance

Plant Cell Reports
Melisa GeneroClaudia A Bustamante

Abstract

The results obtained indicate that a β-xylosidase gene may act as good indicator of chilling tolerance and provide new insights into the complex issue of peach fruit woolliness. The storage of peaches at low temperatures for prolonged periods can induce a form of chilling injury (CI) called woolliness, characterized by a lack of juiciness and a mealy texture. As this disorder has been associated with abnormal cell wall dismantling, the levels of 12 transcripts encoding proteins involved in cell wall metabolism were analysed in cultivars with contrasting susceptibility to this disorder selected from five melting flesh peach cultivars. The resistant ('Springlady') and susceptible ('Flordaking') cultivars displayed differences in the level of expression of some of the selected genes during fruit softening and in woolly versus non-woolly fruits. From these genes, the level of expression of PpXyl, which encodes for a putative β-xylosidase, was the one that presented the highest correlation (negative) with the susceptibility to woolliness. PpXyl expression was also analysed in a cultivar ('Rojo 2') with intermediate susceptibility to woolliness, reinforcing the conclusion about the correlation of PpXyl expression to the presence of w...Continue Reading

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Citations

Oct 18, 2016·Frontiers in Plant Science·Claudia A BustamanteMaría F Drincovich
Jun 13, 2018·Frontiers in Plant Science·Stefano BrizzolaraPietro Tonutti
Feb 20, 2019·Frontiers in Plant Science·Anna Maria SalzanoAndrea Scaloni
May 22, 2018·Journal of Agricultural and Food Chemistry·Shifeng CaoZhenfeng Yang

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