Back to Search
Start Over
Suberin deposition in potato periderm: a novel resistance mechanism against tuber greening
- Source :
- New Phytologist. 225:1273-1284
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- 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.
- Subjects :
- Chlorophyll
0106 biological sciences
0301 basic medicine
Light
Physiology
Plant Science
Biology
01 natural sciences
Anthocyanins
03 medical and health sciences
chemistry.chemical_compound
Greening
Gene Expression Regulation, Plant
Suberin
Pigment accumulation
Carotenoid
Plant Proteins
Solanum tuberosum
2. Zero hunger
chemistry.chemical_classification
Resistance (ecology)
fungi
food and beverages
Carotenoids
Lipids
Plant Tubers
Horticulture
030104 developmental biology
Resistance Factors
chemistry
Cork cambium
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14698137 and 0028646X
- Volume :
- 225
- Database :
- OpenAIRE
- Journal :
- New Phytologist
- Accession number :
- edsair.doi.dedup.....378792cbc6afdb6923ecc9cabcec9ab7