From Crop Domestication to Super-domestication

Vaughan, Duncan A.; Balázs, Ervin; Heslop-Harrison, J. S.

doi:10.1093/aob/mcm224

Cited by 164 publications

(110 citation statements)

References 79 publications

(112 reference statements)

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“…Genetic engineering of crop plants still remains a cumbersome undertaking owing to slow life cycles: Obtaining mature plants from seeds takes 4 months for tomato (Kimura and Sinha 2008), 5 months for maize (Green and Phillips 1975), and 7 months for wheat (McHughen 1983). Furthermore, polyploidy (Vaughan et al 2007) and high levels of genetic redundancy in higher plants (Dean et al 1999) require mutagenesis of several loci to dissect gene function. Arabidopsis became popular as a model organism for molecular studies in the 1980s mostly because of its relative simplicity among angiosperm plants (Somerville and Koornneef 2002).…”

Section: Marchantia As a Basal Model Chassis For Plant Synthetic Biologymentioning

confidence: 99%

Synthetic Botany

Boehm

Pollak

Purswani³

et al. 2017

Cold Spring Harb Perspect Biol

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Plants are attractive platforms for synthetic biology and metabolic engineering. Plants' modular and plastic body plans, capacity for photosynthesis, extensive secondary metabolism, and agronomic systems for large-scale production make them ideal targets for genetic reprogramming. However, efforts in this area have been constrained by slow growth, long life cycles, the requirement for specialized facilities, a paucity of efficient tools for genetic manipulation, and the complexity of multicellularity. There is a need for better experimental and theoretical frameworks to understand the way genetic networks, cellular populations, and tissue-wide physical processes interact at different scales. We highlight new approaches to the DNA-based manipulation of plants and the use of advanced quantitative imaging techniques in simple plant models such as Marchantia polymorpha. These offer the prospects of improved understanding of plant dynamics and new approaches to rational engineering of plant traits.

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Section: Marchantia As a Basal Model Chassis For Plant Synthetic Biologymentioning

confidence: 99%

Synthetic Botany

Boehm

Pollak

Purswani³

et al. 2017

Cold Spring Harb Perspect Biol

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“…Domestication is often described as a multi-step process. The earliest farmers utilized the genetic variation present in the wild progenitors and selected individuals with favorable traits, improving the crop population [35,37,38]. With selection and breeding, desirable traits in crop populations and crop varieties started to increase.…”

Section: Introductionmentioning

confidence: 99%

“…The initial stage of domestication left its imprint in current crop populations due to the fact that the early domestication efforts used a limited number of progenitors, which decreased the genetic diversity of the crop species [35]. Throughout domestication, the overall genetic diversity is reduced, and the effect is more pronounced in domestication-related genes as they are exposed to severe genetic bottlenecks due to strong selection [38].…”

Section: Introductionmentioning

confidence: 99%

“…Greater dispersal distances generated by shattering seeds are more likely to place seeds in more distant microsites, away from pathogens and pests of the maternal plant and competition from siblings. From the agronomic perspective on the other hand, the natural propensity for seed dispersal is an undesired trait in crops as it leads to substantial yield losses and inefficient harvesting [38]. Instead of shattering, indehiscent pods retain their seeds when they are mature.…”

Section: Introductionmentioning

confidence: 99%

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Pod Shattering: A Homologous Series of Variation Underlying Domestication and an Avenue for Crop Improvement

Ogutcen¹,

Pandey²,

Khan³

et al. 2018

Preprint

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In wild habitats, fruit dehiscence is a critical strategy for seed dispersal; however, in cultivated crops it is one of the major sources of yield loss. Therefore, indehiscence of fruits, pods, etc., was likely to be one of the first traits strongly selected in crop domestication. Even with the historical selection against dehiscence in early domesticates, it is a trait still targeted in many breeding programs, particularly in minor or underutilized crops. Here, we review of this trait in pulse (grain legume) crops, which are of growing importance as a source of protein in human and livestock diets, and which have received less attention iii) the molecular pathways underlying this important trait, iv) an overview of the extent of crop losses due to shattering, and the effects of environmental factors on shattering, and, v) efforts to reduce shattering in crops. While our focus is mainly pulse crops, we also included comparisons to crucifers and cereals because there is extensive research on shattering in these taxa.

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“…Branching pattern and its density determined by number of branches per plant, is a complex trait and governed by many genes/QTLs (quantitative trait loci). More-over, this trait was most probably targeted for domestication and selective breeding [7]. Considering the importance of branch number in yield improvement and adaption to the environment, it is imperative to identify the underlying heritable forces and potential genes/QTLs regulating this complex trait.…”

Section: Introductionmentioning

confidence: 99%

Identification of candidate genes for dissecting complex branch number trait in chickpea

et al. 2016

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a b s t r a c tThe present study exploited integrated genomics-assisted breeding strategy for genetic dissection of complex branch number quantitative trait in chickpea. Candidate gene-based association analysis in a branch number association panel was performed by utilizing the genotyping data of 401 SNP allelic variants mined from 27 known cloned branch number gene orthologs of chickpea. The genome-wide association study (GWAS) integrating both genome-wide GBS-(4556 SNPs) and candidate gene-based genotyping information of 4957 SNPs in a structured population of 60 sequenced desi and kabuli accessions (with 350-400 kb LD decay), detected 11 significant genomic loci (genes) associated (41% combined PVE) with branch number in chickpea. Of these, seven branch number-associated genes were further validated successfully in two inter (ICC 4958 × ICC 17160)-and intra (ICC 12299 × ICC 8261)-specific mapping populations. The axillary meristem and shoot apical meristem-specific expression, including differential up-and down-regulation (4-5 fold) of the validated seven branch number-associated genes especially in high branch number as compared to the low branch number-containing parental accessions and homozygous individuals of two aforesaid mapping populations was apparent. Collectively, this combinatorial genomic approach delineated diverse naturally occurring novel functional SNP allelic variants in seven potential known/candidate genes [PIN1 (PIN-FORMED protein 1), TB1 (teosinte branched 1), BA1/LAX1 (BARREN STALK1/LIKE AUXIN1), GRAS8 (gibberellic acid insensitive/GAI, Repressor of ga13/RGA and Scarecrow8/SCR8), ERF (ethylene-responsive element-binding factor), MAX2 (more axillary growth 2) and lipase] governing chickpea branch number. The useful information generated from this study have potential to expedite marker-assisted genetic enhancement by developing high-yielding cultivars with more number of productive (pods and seeds) branches in chickpea.

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From Crop Domestication to Super-domestication

Cited by 164 publications

References 79 publications

Synthetic Botany

Synthetic Botany

Pod Shattering: A Homologous Series of Variation Underlying Domestication and an Avenue for Crop Improvement

Identification of candidate genes for dissecting complex branch number trait in chickpea

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