QTLs for cell wall-bound phenolics in relation to the photosynthetic apparatus activity and leaf water status under drought stress at different growth stages of triticale

The present study aimed at identifying the regions of triticale genome responsible for cell wall saturation with phenolic compounds under drought stress during vegetative and generative growth. Moreover, the loci determining the activity of the photosynthetic apparatus, leaf water content (LWC) and...

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Published in:Molecular genetics and genomics : MGG Vol. 292; no. 2; pp. 415 - 433
Main Authors: Hura, Tomasz, Tyrka, Mirosław, Hura, Katarzyna, Ostrowska, Agnieszka, Dziurka, Kinga
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2017
Springer Nature B.V
Subjects:
Animal Genetics and Genomics
Biochemistry
Biomedical and Life Sciences
Carbohydrates
Cell Wall - metabolism
cell walls
Chlorophyll
Chlorophyll - genetics
Chromosome Mapping
developmental stages
Drought
Droughts
fluorescence
genes
Genes, Plant
Genetic Linkage
Genome, Plant
Genomes
Genomics
Human Genetics
leaves
Life Sciences
Limit of Detection
loci
Microbial Genetics and Genomics
Original Article
Osmosis
osmotic pressure
phenolic compounds
Phenols - chemistry
Phenotype
Photosynthesis
Physiology
Plant Genetics and Genomics
Plant Leaves - chemistry
Plant Leaves - genetics
Plant resistance
Quantitative Trait Loci
quantitative traits
triticale
Triticale - genetics
vegetative growth
Water
water content
Water shortages
water stress
Poland
Leaf water content
Osmotic potential
Photosynthetic apparatus activity
QTLs
Cell wall-bound phenolics
Triticale
ISSN:1617-4615, 1617-4623, 1617-4623
Online Access:Get full text
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Summary:The present study aimed at identifying the regions of triticale genome responsible for cell wall saturation with phenolic compounds under drought stress during vegetative and generative growth. Moreover, the loci determining the activity of the photosynthetic apparatus, leaf water content (LWC) and osmotic potential ( Ψ o ) were identified, as leaf hydration and functioning of the photosynthetic apparatus under drought are associated with the content of cell wall-bound phenolics (CWPh). Compared with LWC and Ψ o , CWPh fluctuations were more strongly associated with changes in chlorophyll fluorescence. At the vegetative stage, CWPh fluctuations were due to the activity of three loci, of which only QCWPh.4B was also related to changes in F v / F m and ABS/CS m . In the other QTLs (QCWPh.6R.2 and QCWPh.6R.3), the genes of these loci determined also the changes in majority of chlorophyll fluorescence parameters. At the generative stage, the changes in CWPh in loci QCWPh.4B, QCWPh.3R and QCWPh.6R.1 corresponded to those in DI o /CS m . The locus QCWPh.6R.3, active at V stage, controlled majority of chlorophyll fluorescence parameters. This is the first study on mapping quantitative traits in triticale plants exposed to drought at different stages of development, and the first to present the loci for cell wall-bound phenolics.
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ISSN:1617-4615
1617-4623
1617-4623
DOI:10.1007/s00438-016-1276-y