Articles
Research progress in adventitious root formation in Malus species, including crabapples
Article number
1434_27
Pages
189 – 194
Language
English
Abstract
Crabapple trees, belonging to the genus Malus, are renowned for their ornamental value, possessing vibrant flowers and fruit that beautify surrounding landscapes.
Both apples and their rootstocks belong to Malus. Adventitious rooting ability is pivotal for cutting propagation, which is essential for both ornamental and fruit-bearing trees.
However, substantial genetic variation exists in adventitious rooting ability across Malus species.
Molecular studies in Arabidopsis thaliana have elucidated the mechanism of adventitious root formation, implicating the involvement of the auxin signaling pathway.
Additionally, a relationship between cutting rooting ability and auxin has been suggested in Malus species.
Prior research on apple rootstocks identified major quantitative trait loci (QTL) for adventitious rooting ability potentially located on chromosome 17 (Moriya et al., 2015). Building upon this foundation, we have analyzed candidate genes for the QTL by comparing genomic structures, cDNA sequences, and gene expression between Malus species with and without adventitious rooting ability.
Furthermore, expression analysis of auxin signaling–related genes and observations of morphology during cutting experiments have been conducted using these Malus species.
Insights into the mechanisms governing adventitious root formation and the development of precise DNA markers are anticipated in the foreseeable future.
Both apples and their rootstocks belong to Malus. Adventitious rooting ability is pivotal for cutting propagation, which is essential for both ornamental and fruit-bearing trees.
However, substantial genetic variation exists in adventitious rooting ability across Malus species.
Molecular studies in Arabidopsis thaliana have elucidated the mechanism of adventitious root formation, implicating the involvement of the auxin signaling pathway.
Additionally, a relationship between cutting rooting ability and auxin has been suggested in Malus species.
Prior research on apple rootstocks identified major quantitative trait loci (QTL) for adventitious rooting ability potentially located on chromosome 17 (Moriya et al., 2015). Building upon this foundation, we have analyzed candidate genes for the QTL by comparing genomic structures, cDNA sequences, and gene expression between Malus species with and without adventitious rooting ability.
Furthermore, expression analysis of auxin signaling–related genes and observations of morphology during cutting experiments have been conducted using these Malus species.
Insights into the mechanisms governing adventitious root formation and the development of precise DNA markers are anticipated in the foreseeable future.
Authors
R. Moritani, S. Moriya, K. Kato, Y. Kanayama
Keywords
cutting, auxin, QTL analysis, rootstock, Malus domestica, Malus prunifolia
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