Contrasting patterns of variation in weedy traits and unique crop features in divergent populations of US weedy rice (<i>Oryza sativa sp</i>.) in Arkansas and California

Métris, Kimberly L. Kanapeckas; Tseng, Te‐Ming; Vigueira, Cynthia C.; Ortiz, Aída; Bridges, William C.; Burgos, Nilda R.; Fischer, Albert J.; Lawton‐Rauh, Amy

doi:10.1002/ps.4820

Cited by 22 publications

(26 citation statements)

References 50 publications

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“…Such work provided insights into evolutionary processes responsible for weedy traits in rice and identified genomic regions that could be used for crop improvement . Importantly, with the more robust genomic tools in rice, we can now detect the difference between exoferal (derived from crop‐wild relative hybridization) and endoferal (escaped crop genotypes) weeds . Through comparative genomics analyses of exo‐ and endoferal weedy rice, we can now discover quantitative genetic differences in weedy versus domesticated traits and how population structure may modulate these differences in the field.…”

Section: Weed Genomics For Novel and Improved Weed Managementmentioning

confidence: 99%

The power and potential of genomics in weed biology and management

Ravet

Patterson

Krähmer

et al. 2018

Pest Management Science

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There have been previous calls for, and efforts focused on, realizing the power and potential of weed genomics for better understanding of weeds. Sustained advances in genome sequencing and assembly technologies now make it possible for individual research groups to generate reference genomes for multiple weed species at reasonable costs. Here, we present the outcomes from several meetings, discussions, and workshops focused on establishing an International Weed Genomics Consortium (IWGC) for a coordinated international effort in weed genomics. We review the 'state of the art' in genomics and weed genomics, including technologies, applications, and on-going weed genome projects. We also report the outcomes from a workshop and a global survey of the weed science community to identify priority species, key biological questions, and weed management applications that can be addressed through greater availability of, and access to, genomic resources. Major focus areas include the evolution of herbicide resistance and weedy traits, the development of molecular diagnostics, and the identification of novel targets and approaches for weed management. There is increasing interest in, and need for, weed genomics, and the establishment of the IWGC will provide the necessary global platform for communication and coordination of weed genomics research. © 2018 Society of Chemical Industry.

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Section: Weed Genomics For Novel and Improved Weed Managementmentioning

confidence: 99%

The power and potential of genomics in weed biology and management

Ravet

Patterson

Krähmer

et al. 2018

Pest Management Science

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“…Four of the 2006 accessions were also used to produce plant material for other studies (Kanapeckas et al, 2017(Kanapeckas et al, , 2016. To enable comparison with other weedy and wild rice, we included 20 weedy rice accessions from the southern United States (Arkansas, Mississippi, Missouri, Louisiana, and Texas) and 8 wild rice accessions.…”

Section: Plant Materialsmentioning

confidence: 99%

“…Since then, weedy rice has been identified in at least 60 fields and on over 4,050 ha in 2016(Whitney Brim-DeForest, personal communication, February 5, 2018. While weedy rice in the southern United States has been well-characterized (Li et al, 2017;Londo & Schaal, 2007;, weedy rice in California is a recent and growing problem with previous studies limited to one or two biotypes (Kanapeckas et al, 2017(Kanapeckas et al, ,2016Londo & Schaal, 2007). It is unclear whether California weedy rice is derived from the weedy rice present in the southern United States, from cultivated rice inside or outside of California, from Asian wild rice, or from hybridization of any of these groups.…”

mentioning

confidence: 99%

Genetic variation and possible origins of weedy rice found in California

Leon

Karn²,

Al‐Khatib

et al. 2019

Ecology and Evolution

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Control of weeds in cultivated crops is a pivotal component in successful crop production allowing higher yield and higher quality. In rice‐growing regions worldwide, weedy rice (Oryza sativa f. spontanea Rosh.) is a weed related to cultivated rice which infests rice fields. With populations across the globe evolving a suite of phenotypic traits characteristic of weeds and of cultivated rice, varying hypotheses exist on the origin of weedy rice. Here, we investigated the genetic diversity and possible origin of weedy rice in California using 98 simple sequence repeat (SSR) markers and an Rc gene‐specific marker. By employing phylogenetic clustering analysis, we show that four to five genetically distinct biotypes of weedy rice exist in California. Analysis of population structure and genetic distance among individuals reveals diverse evolutionary origins of California weedy rice biotypes, with ancestry derived from indica, aus, and japonica cultivated rice as well as possible contributions from weedy rice from the southern United States and wild rice. Because this diverse parentage primarily consists of weedy, wild, and cultivated rice not found in California, most existing weedy rice biotypes likely originated outside California.

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“…There is immense diversity both among and within weedy rice populations and between weedy and cultivated rice [35][36][37][38]. Studying the differences in weedy rice populations in relation to phenological and morphological traits will help us better understand the evolution of weedy traits.…”

Section: Evolution Of Weedy Ricementioning

confidence: 99%

Weedy Rice: Competitive Ability, Evolution, and Diversity

Shrestha¹,

Stallworth²,

Tseng³

2019

Integrated View of Population Genetics

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Weedy rice is conspecific, the most troublesome weed of cultivated rice identified as a threat to global rice production. The weed has inherited high reproductive ability and high dormancy by outcrossing with modern rice cultivars and wild cultivars, respectively. Traits such as rapid growth, high tillering, enhanced ability to uptake fertilizers, asynchronous maturation, seed shattering, and long dormancy periods make weedy rice more competitive than cultivated rice. Weedy rice infesting rice fields are morphologically diverse with different hull color, awn length, plant height, and variable tiller number. Morphological diversity in weedy rice can be attributed to its high genetic diversity. Introgression of alleles from cultivated rice into weedy has resulted in high genetic and morphological diversity in weedy rice. Although variations among weedy rice populations make them difficult to control, on the brighter side, competitive nature of weedy rice could be considered as raw genetic materials for rice breeding program to develop vigorous rice plants able to tolerate high biotic and abiotic stresses.

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Contrasting patterns of variation in weedy traits and unique crop features in divergent populations of US weedy rice (Oryza sativa sp.) in Arkansas and California

Cited by 22 publications

References 50 publications

The power and potential of genomics in weed biology and management

The power and potential of genomics in weed biology and management

Genetic variation and possible origins of weedy rice found in California

Weedy Rice: Competitive Ability, Evolution, and Diversity

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