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It is the biggest library of agricultural literature in Latvia, the deposit library of the UN Food and Agriculture Organisation and the national centre of the information systems AGRIS and CARIS.

Journal Article

Journal Article

Expression of phenylpropanoid pathway genes in Scots pine (Pinus sylvestris L.) in open-pollinated families with differing wood densities during early and late wood formation  [2012]

Kanberga-Silina, K., Latvian State Forest Research Inst. Silava, Salaspils (Latvia). Genetic Resource Centre; Jansons, A., Latvian State Forest Research Inst. Silava, Salaspils (Latvia). Div. of Forest Tree Breeding; Rungis, D., Latvian State Forest Research Inst. Silava, Salaspils (Latvia). Genetic Resource Centre;

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Scots pine (Pinus sylvestris L.) is a species of great economic importance in the Northern hemisphere. Wood volume and quality are the most important aspects of commercial forestry production, and studies of wood formation are becoming more important in order to increase the value and efficiency of forestry production. The phenylpropanoid pathway produces various compounds with diverse functions both for plant defence against biotic and abiotic stress as well as structural development. One of main roles is monolignol production for lignin biosynthesis, which is a crucial aspect of wood formation. For this study three candidate genes involved in lignin biosynthesis were selected: phenylalanine ammonia-lyase (PAL1), cinnamyl alcohol dehydrogenase (CAD) and cinnamoyl-CoA reductase (CCR). Wood density was measured because it is one of main wood quality parameters. Candidate gene expression was studied in selected open-pollinated Scots pine families in which wood density was measured to investigate the expression of these genes during early wood (EW) and late wood (LW) formation and whether correlation between these genes and wood density can be established. Wood density values for selected trees were similar within tree families but differed significantly between families with high and low wood density (p=1,06E-20). Significant gene expression differences between early and late wood formation was detected for the CAD gene in trees with low wood density (p=0,00
179). It was three times lower during late wood formation compared to early wood formation. Expression of the PAL1 gene was five times higher during EW formation in trees with higher wood density. A positive correlation was detected between PAL1 and CCR gene expression during EW formation (r=0,804) and during LW formation (r=0,466).

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Bibliographic information

Language:
English
Type:
Conference
In AGRIS since:
2013
Volume:
25
Issue:
58
Start Page:
179
All titles:
" Expression of phenylpropanoid pathway genes in Scots pine (Pinus sylvestris L.) in open-pollinated families with differing wood densities during early and late wood formation "
Other:
" Summary only "

From the journal

Speciālais izdevums

ISSN : 1407-270X