Mapping of Seed Shattering Loci Provides Insights into Origin of Weedy Rice and Rice Domestication

Subudhi, Prasanta K.; Singh, Pawan K.; DeLeon, Teresa; Parco, Arnold; Karan, Ratna; Biradar, Hanamareddy; Cohn, Marc Alan; Sasaki, Takuji

doi:10.1093/jhered/est089

Cited by 41 publications

(66 citation statements)

References 54 publications

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“…Similar reports implicate weedy rice in reducing the yield of cultivated rice by one t ha-1 in Malaysia (Azmi et al, 2012;Chauhan, 2013). Weedy rice is also known as red rice in the USA and arose from Asian domesticated rice; therefore, most weedy rice studies in the US explore the evolutionary basis and population structure of weedy rice (Thurber et al, 2013;Subudhi et al, 2014). Ziska et al (2010) reported that weedy rice shows greater competitive ability in response to rising CO2 levels, thus, deeming it a potentially serious problem of the future.…”

Section: Introductionmentioning

confidence: 76%

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

Shu-lin¹,

Tian²,

Li³

et al. 2017

mpb

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Weedy rice produces a low number of grains per plant and is considered undesirable in cultivated rice fields. It spreads rapidly because of its high phenotypic plasticity and seed shattering. We used the RID14 marker to identify the genotypes governing red and white pericarp color in weedy rice. We then evaluated 18 characters of 199 weedy rice accessions (5 rice-growing regions in Asia) and 24 of cultivated rice as control, and analyzed them using coefficients of variation, principal component analysis, and cluster analysis. Our results showed that weedy rice accessions and cultivated rice populations from different regions of Asia were significantly different in one or more of their morphological characteristics. Weedy rice significantly differed from cultivated rice in plant height at vegetative growth phase, and in pericarp color and seed shattering during the reproductive growth phase. According to principal component analysis, weedy rice populations were significantly separated from cultivated rice in North China, Korea, Southeast Asia, Korea, and South China. We used principal component analysis and cluster analysis to categorize weedy rice populations into 3 main groups: Group 1 from Korea and Northern China; group 2 from Southern China and Southeast Asia; and group 3 from Eastern China. This study established an index for morphological characteristics of weedy rice to facilitate its identification the fields, which are expected to provide a theoretical basis for weedy rice infestation control in Asia.

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Section: Introductionmentioning

confidence: 76%

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

Shu-lin¹,

Tian²,

Li³

et al. 2017

mpb

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“…Shattering wild and weedy rice individuals possess well-defined abscission layers at flowering time, which are not present in domestic cultivars (Ferrero and Vidotto 1998;Thurber et al 2011;Akasaka et al 2011). Four shattering genes, sh1, sh2, Sh3, and sh4, have been identified in rice (Subudhi et al 2014). Lin et al (2007) reported the involvement of a single dominant gene, Shattering1 (SHA1), in seed shattering.…”

Section: Seed Shatteringmentioning

confidence: 99%

Weedy rice in sustainable rice production. A review

Nadir

Xiong

Zhu

et al. 2017

Agron. Sustain. Dev.

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Weedy rice refers to the unwanted plants of the genus Oryza that have some undesirable agronomic traits and pose a major threat to sustainable rice production worldwide. Widespread adoption of direct seeded rice and hybridization or gene flow between cultivated rice and their wild relatives has resulted in the creation and dissemination of weedy rice. Currently, weedy rice (Oryza sativa f. spontanea) has become one of the most common weeds infesting rice fields worldwide. In this paper, we review the biology, physiology, evolution, and genetic features of weedy rice. We also discuss the major obstacles in weedy rice management, including high diversity of weedy rice, ecological impacts of gene flow on weedy rice, changing climate, and weedy rice management. We then present a framework for the sustainable management and utilization of weedy rice. Our main emphasis is to explore the reservoir of natural variations in weedy germplasm and to utilize them for crop improvement. This review outlines some of the latest biotechnological tools to dissect the genetic backgrounds of several favorable traits of weedy rice that may prove beneficial for breeding and evolutionary studies on cultivated rice. We suggest that by merging the disciplines of genomics, breeding, and weed management, we can achieve the goal of sustainable rice production.

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“…At both loci, weeds share haplotypes with their cultivated progenitors despite significantly different flowering times. For the first time, Subudhi et al (2014) discovered QTL mapping on seed-shattering loci of two rice cultivars and a weedy rice accession in the southern United States. They revealed 3 to 5 QTLs that controlled seed shattering with 38% to 45% of total phenotypic variation between weedy rice and cultivated rice.…”

Section: Origin Distribution and Biotypes Of Weedy Ricementioning

confidence: 99%

Competitive ability of cultivated rice against weedy rice biotypes: A review

Olajumoke

Juraimi

Uddin

et al. 2016

Chilean J. Agric. Res.

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Weedy rice has been identified as a threat to rice production worldwide. Its phenotypic and genotypic diversity and its potential to compete against rice in all development stages from germination to maturity have resulted in a loss of rice yield and grain quality, which is remarkably high in directseeded rice cultivation. Weedy rice dormancy varies, it has a higher germination rate, and tolerates deeper germination depth compared to rice cultivars. Interactions of weedy rice with cultivars often reflect early vigor, more tillering, nutrient utilization ability for shoot development with respect to rice cultivars even though the latter also show an improvement in shoot development under competition. An exponential relationship has been reported between cultivated rice loss and weedy rice density: this is true for all rice cultivars. The degree of loss is dependent on the competitive ability of the rice cultivar being studied, and each weedy rice biotype also interacts differently. Hence, the need for a comprehensive study of the biology of various weedy rice variants. Difficulties arise in the management of weedy rice due to its physiological, anatomical, and morphological similarities to cultivated rice. The manipulation of the environment to improve cultivated rice production and suppress the emergence of weedy rice variants is important in the management of weedy rice, as well as other cultural practices and use of pesticides. The development of herbicide-resistant rice cultivars is necessary to totally eliminate the weedy rice variants. This review provides information on the competitive ability of weedy rice against rice cultivars; this information is essential to create management options to control weedy rice.

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Mapping of Seed Shattering Loci Provides Insights into Origin of Weedy Rice and Rice Domestication

Cited by 41 publications

References 54 publications

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

Weedy rice in sustainable rice production. A review

Competitive ability of cultivated rice against weedy rice biotypes: A review

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