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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Vydáno v:	Molecular genetics and genomics : MGG Ročník 292; číslo 2; s. 415 - 433
Hlavní autoři:	Hura, Tomasz, Tyrka, Mirosław, Hura, Katarzyna, Ostrowska, Agnieszka, Dziurka, Kinga
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2017 Springer Nature B.V
Témata:	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
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Shrnutí:	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.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	1617-4615 1617-4623 1617-4623
DOI:	10.1007/s00438-016-1276-y