Chromosome Engineering in Tropical Cash Crops

Bolaños-Villegas, Pablo

doi:10.3390/agronomy10010122

Cited by 5 publications

(5 citation statements)

References 53 publications

(149 reference statements)

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“…Meiotic division and gametophytic ploidy are tightly regulated processes at the molecular level, and many of these regulators have been successfully characterized 25 . For instance, mutations in the Arabidopsis thaliana gene DYAD/SWITCH1 (SWI1; At5g51330) functioning in cohesion regulation 28 and its maize and rice homologs, both named AMEI-OTIC1 (GRMZM5G883855 and Os03g44760) 29 , lead to the abrogation of synapsis during meiosis I and rather turn it into a mitotic-like cycle 30 . However, in the Arabidopsis mutants parallel-spindle 1 or Jason, disturbed orientation of the spindle leads to a similar effect 31 .…”

Section: Synapsis Chromosome Segregation and Meiotic Non-reductionmentioning

confidence: 99%

Polyploidy in Orchid Breeding, Advances and Perspectives

Bolaños-Villegas¹,

Chen²

2022

Preprint

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The orchid market is a dynamic horticultural business in which novelty and beauty command high prices. The development of miniature to large and showy flowers, in addition to fragrance, is mainly of interest. Overall organ size might be modified by doubling the chromosome number, which can be accomplished by careful study of meiotic chromosome disjunction in hybrids or species. Meiosis is the process in which diploid (2n) pollen mother cells recombine their DNA sequences and then undergo two rounds of division to give rise to four haploid (n) cells called sporads. Thus, by interfering in chromosome segregation, one can induce the development of diploid recombinant sporads called dyads. These dyads may be used for breeding polyploid progenies with enhanced fertility and large flower size. This review gives an overview of developments in orchid breeding placed in the large context of ploidy breeding in higher plants to facilitate innovation

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Section: Synapsis Chromosome Segregation and Meiotic Non-reductionmentioning

confidence: 99%

Polyploidy in Orchid Breeding, Advances and Perspectives

Bolaños-Villegas¹,

Chen²

2022

Preprint

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“…Meiotic division and gametophytic ploidy (see Table 1 ) are tightly regulated processes at the molecular level, and many of these regulators have been successfully characterized [ 38 ]. For instance, mutations in the Arabidopsis thaliana gene DYAD/SWITCH1 ( SWI1 ; At5g51330 ) (see Table 2 ) functioning in cohesion regulation [ 41 ] and its maize and rice homologs, both named AMEIOTIC1 ( GRMZM5G883855 and Os03g44760 ) [ 42 ], lead to the abrogation of synapsis during meiosis I and rather turn it into a mitotic-like cycle [ 43 ]. However, in the Arabidopsis mutants parallel-spindle 1 or Jason , disturbed orientation of the spindle leads to a similar effect [ 43 ].…”

Section: Synapsis Chromosome Segregation and Meiotic Non-reductionmentioning

confidence: 99%

Advances and Perspectives for Polyploidy Breeding in Orchids

Bolaños-Villegas

Chen

2022

Plants

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The orchid market is a dynamic horticultural business in which novelty and beauty command high prices. The two main interests are the development of flowers, from the miniature to the large and showy, and their fragrance. Overall organ size might be modified by doubling the chromosome number, which can be accomplished by careful study of meiotic chromosome disjunction in hybrids or species. Meiosis is the process in which diploid (2n) pollen mother cells recombine their DNA sequences and then undergo two rounds of division to give rise to four haploid (n) cells. Thus, by interfering in chromosome segregation, one can induce the development of diploid recombinant cells, called unreduced gametes. These unreduced gametes may be used for breeding polyploid progenies with enhanced fertility and large flower size. This review provides an overview of developments in orchid polyploidy breeding placed in the large context of meiotic chromosome segregation in the model plants Arabidopsis thaliana and Brassica napus to facilitate molecular translational research and horticultural innovation.

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“…For example, Silva et al (2008) investigated the behavior of the boll weevil ( Anthonomus grandis ) when attacking ratooned upland cotton mutants whose morphological characteristics included okra-shaped leaves, frego bracts, and red coloration, and the results clearly showed that the number of eggs laid per red plant with frego bracts was lower than that laid on the other plant types. In addition to the use of transgenic methods to breed insect-resistant cotton, emerging molecular biology technologies, such as gene editing and RNA-interference (RNAi) gene silencing technologies, are being used ( Bolaños-Villegas, 2020 ).…”

Section: Future Studies On Ratoon Cotton For Heterosis Utilizationmentioning

confidence: 99%

Ratooning Annual Cotton (Gossypium spp.) for Perennial Utilization of Heterosis

Zhang

Zhou

et al. 2020

Front. Plant Sci.

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This paper reviews an important topic within the broader framework of the use of ratoon cotton for the development of a cost-saving and efficient method for the perennial production of hybrid cotton seeds. Cotton has a botanically indeterminate perennial growth habit and originated in the tropics. However, cotton has been domesticated as an annual crop in temperate areas worldwide. Ratoon cultivation has an important application value and is important for cotton production, breeding, and basic research. In particular, ratooned male-sterile lines have four advantages: an established root system, an indeterminate flowering habit, ratooning ability, and perennial maintenance of sterility in the absence of a matched maintainer. These advantages can help reduce the costs of producing F1 hybrid cotton seeds and can help breed high-yielding hybrid combinations because ratooning is a type of asexual reproduction that allows genotypes to remain unchanged. However, ratooning of cotton is highly complex and leads to problems, such as the accumulation of pests and diseases, decreased boll size, stand loss during severe winters, and harmful regrowth during mild winters, which need to be resolved. In summary, ratoon cotton has advantages and disadvantages for the production of hybrid cotton seeds, and future prospects of ratooning annual cotton for the perennial utilization of heterosis are promising if the mechanization of seed production can be widely applied in practice.

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Chromosome Engineering in Tropical Cash Crops

Cited by 5 publications

References 53 publications

Polyploidy in Orchid Breeding, Advances and Perspectives

Polyploidy in Orchid Breeding, Advances and Perspectives

Advances and Perspectives for Polyploidy Breeding in Orchids

Ratooning Annual Cotton (Gossypium spp.) for Perennial Utilization of Heterosis

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