In vitro induction of tetraploids in Arachis paraguariensis

“…Similar results were reported in cannabis by Bagheri and Mansouri (2015). By contrast, a higher number of trichomes have been reported for some polyploids (Aina et al, 2012;Zahedi et al, 2014). A relationship between the number of trichomes in leaves and resistance to abiotic stresses has also been reported (Huang et al, 2007) in Dioscorea zingiberensis (Zhang et al, 2010b) and Coccira palmate (Ntuli and Zobolo, 2008).…”

Section: Impact Of Chromosomal Doubling On Morphological Characteristicssupporting

confidence: 67%

Assessment of morphological and phytochemical attributes in triploid and hexaploid plants of the bioenergy crop Miscanthus×giganteus

Ghimire

Seong

Nguyen

et al. 2016

Industrial Crops and Products

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“…However, it is contrary to the early belief that polyploidization often results in larger organs2728. Colchicine poisoning is one possible cause of the dwarf phenotype of autotetraploid plants after genome doubling29. To exclude the possibility that colchicine poisoning caused the dwarf phenotype of autotetraploid apple, we cultured shoot tips from 5-year-old diploid and autotetraploid apple plants in vitro .…”

Section: Discussionmentioning

confidence: 95%

Involvement of Auxin and Brassinosteroid in Dwarfism of Autotetraploid Apple (Malus × domestica)

Hou

Zhang

et al. 2016

Sci Rep

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The plant height is an important trait in fruit tree. However, the molecular mechanism on dwarfism is still poorly understood. We found that colchicine-induced autotetraploid apple plants (Malus × domestica) exhibited a dwarf phenotype. The vertical length of cortical parenchyma cells was shorter in autotetraploids than in diploids, by observing paraffin sections. Hormone levels of indoleacetic acid (IAA) and brassinosteroid (BR) were significantly decreased in 3- and 5-year-old autotetraploid plants. Digital gene expression (DGE) analysis showed that the differentially expressed genes were mainly involved in IAA and BR pathways. microRNA390 was significantly upregulated according to microarray analysis. Exogenous application of IAA and BR promoted stem elongation of both apple plants grown in medium. The results show that dwarfing in autotetraploid apple plants is most likely regulated by IAA and BR. The dwarf phenotype of autotetraploid apple plants could be due to accumulation of miR390 after genome doubling, leading to upregulation of apple trans-acting short-interfering RNA 3 (MdTAS3) expression, which in turn downregulates the expression of MdARF3. Overall, this leads to partial interruption of the IAA and BR signal transduction pathway. Our study provides important insights into the molecular mechanisms underlying dwarfism in autopolyploid apple plants.

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In vitro induction of tetraploids in Arachis paraguariensis

Cited by 33 publications

References 30 publications

Overproduction of valuable methoxylated flavones in induced tetraploid plants of Dracocephalum kotschyi Boiss

Overproduction of valuable methoxylated flavones in induced tetraploid plants of Dracocephalum kotschyi Boiss

Assessment of morphological and phytochemical attributes in triploid and hexaploid plants of the bioenergy crop Miscanthus×giganteus

Involvement of Auxin and Brassinosteroid in Dwarfism of Autotetraploid Apple (Malus × domestica)

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