Detection and localization of RF-PIN1, a gene encoding an auxin carrier protein, in different apple rootstocks
To investigate the expression of a gene encoding an auxin carrier protein in trees of different apple rootstocks, a 1433-bp full-length cDNA fragment of the putative auxin carrier protein gene RF-PIN1, encoding 476 amino acids, was cloned from Fuji apple.
Using semi-quantitative RT-PCR analyses, RF-PIN1 transcripts were detected in various organs at different times of the year; the transcript abundance was higher in leaves and roots of Red Fuji/Malus micromalus Makino than in those of Red Fuji/M9 and Red Fuji/M9/M. micromalus Makino.
An in situ hybridization analysis revealed significant hybridization signals for RF-PIN1 transcripts in leaves and roots in Red Fuji/M. micromalus Makino and Fuji/M9/M. micromalus Makino. RF-PIN1 transcripts were specifically distributed in the main vein of leaves, root vascular tissues (mainly in cambium and xylem parenchyma) and the lower epidermis of apical vascular pillar cells.
The hybridization signals of RF-PIN1 were markedly stronger in leaves and roots of Red Fuji/M. micromalus Makino than in those of apple trees with M9 as interstock.
Presumably, the introduction of the dwarfing stock M9 resulted in various changes in biological characteristics, eventually leading to differences in expression levels of RF-PIN1.
Li, H.L., Zhang, H., Yu, C. and Han, Z.H. (2016). Detection and localization of RF-PIN1, a gene encoding an auxin carrier protein, in different apple rootstocks. Acta Hortic. 1130, 415-424
DOI: 10.17660/ActaHortic.2016.1130.62
https://doi.org/10.17660/ActaHortic.2016.1130.62
DOI: 10.17660/ActaHortic.2016.1130.62
https://doi.org/10.17660/ActaHortic.2016.1130.62
apple rootstock, dwarf, semi-quantitative RT-PCR, in situ hybridization
English
1130_62
415-424
- Working Group Orchard Systems and Technologies
- Working Group Environmental Physiology and Developmental Biology
- Division Temperate Tree Fruits
- Division Physiology and Plant-Environment Interactions of Horticultural Crops in Field Systems
- Division Precision Horticulture and Engineering
- Division Tropical and Subtropical Fruit and Nuts
- Division Temperate Tree Nuts
- Division Vegetables, Roots and Tubers
- Division Protected Cultivation and Soilless Culture
- Division Vine and Berry Fruits