Tanios, S and Thangavel, T and Eyles, A and Tegg, RS and Nichols, DS and Corkrey, R and Wilson, CR, Suberin deposition in potato periderm: a novel resistance mechanism against tuber greening, New Phytologist, 225, (3) pp. 1273-1284. ISSN 1469-8137 (2020) [Refereed Article]
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Copyright 2019 The Authors New Phytologist Copyright 2019 New Phytologist Trust
- Light‐induced tuber greening is one of the most important quality defects of potato. Although varietal and maturity factors are known to affect greening resistance, physiological mechanisms of resistance are poorly understood. We proposed that physiological and biochemical factors within the tuber periderm provide resistance and hypothesised that resistance is primarily related to suberin content.
- We investigated differences in the tuber periderm between genotypes and tuber maturities that varied in greening propensity. We examined suberin and light‐induced pigment accumulation, and phellem cell development and studied greening propensity in mutant and chemically treated tubers with enhanced suberisation.
- Resistance to greening was strongly linked to increased suberin in the periderm, which varied with variety and tuber maturity. Furthermore, greening was reduced in mutant and chemically treated tubers with enhanced suberisation. Increases in phellem cell layers and light‐induced carotenoids and anthocyanins were identified as secondary resistance factors.
- Our work represents the first physiological mechanism of varietal and tuber maturity resistance to greening, expanding the known functionality of suberin and providing for the first time a biomarker that will aid producers and breeders in selection and improvement of potato varieties for greening resistance.
|Item Type:||Refereed Article|
|Keywords:||anthocyanins, carotenoids, chlorophyll, phellem, potato, suberin, tuber greening resistance|
|Research Division:||Agricultural, Veterinary and Food Sciences|
|Research Group:||Horticultural production|
|Research Field:||Post harvest horticultural technologies (incl. transportation and storage)|
|Objective Division:||Plant Production and Plant Primary Products|
|Objective Group:||Horticultural crops|
|Objective Field:||Field grown vegetable crops|
|UTAS Author:||Tanios, S (Dr Sabine Tanios)|
|UTAS Author:||Thangavel, T (Dr Tamil Thangavel)|
|UTAS Author:||Eyles, A (Dr Alieta Eyles)|
|UTAS Author:||Tegg, RS (Dr Robert Tegg)|
|UTAS Author:||Nichols, DS (Dr David Nichols)|
|UTAS Author:||Corkrey, R (Dr Ross Corkrey)|
|UTAS Author:||Wilson, CR (Professor Calum Wilson)|
|Web of Science® Times Cited:||6|
|Deposited By:||TIA - Research Institute|
|Downloads:||7 View Download Statistics|
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