Multiple compensatory mutations contribute to the de‐domestication of Iberian weedy rice
Multiple compensatory mutations contribute to the de‐domestication of Iberian weedy rice
复制标题
DOI：
10.1002/ppp3.10286
复制
发表时间：
2022-07
期刊：
影响因子：
--
通讯作者：
Xia Li;Shulin Zhang;Ignacio Amaro-Blanco;Sherin Perera;Nikhil Shirish Khandekar;Daniel Lowey;M. D. Osuna;A. Caicedo
中科院分区：
文献类型：
--
作者：
Xia Li;Shulin Zhang;Ignacio Amaro-Blanco;Sherin Perera;Nikhil Shirish Khandekar;Daniel Lowey;M. D. Osuna;A. Caicedo
社会影响声明杂草植物是农业生产力的主要制约因素。杂草稻是一种入侵全世界稻田的杂草，是导致水稻减产的原因。迄今为止的研究已经在世界不同地区发现了多个独立的杂草稻起源。我们调查了西班牙和葡萄牙杂草稻的起源，发现它是从当地种植的栽培稻品种群演变而来的。伊比利亚杂草携带突变，逆转驯化果皮颜色的祖先红色。我们的研究结果意味着，需要管理策略，以防止麻烦的杂草从栽培祖先的演变。SummaryWeedy水稻，一个破坏性的同种杂草栽培稻，已经出现了多次独立在世界各地。了解所有杂草稻的起源是必要的，以创造更有效的杂草管理策略。在西班牙和葡萄牙，杂草稻的起源是未知的，那里没有原生的稻属物种。在这项研究中，我们试图确定可能的祖先伊比利亚杂草稻和杂草性状，种子破碎，和红色pellers.We的进化机制，我们使用基因分型测序，以了解伊比利亚杂草稻的起源和它的关系，其他杂草，野生和栽培稻世界各地的群体。我们还对落粒和果皮颜色的候选基因进行了基因分型。我们发现伊比利亚半岛的杂草稻主要是通过对温带粳稻的去驯化而进化而来的，少数起源于外来的杂草稻。伊比利亚杂草通过新的基因座进化出粉碎种子的能力，并通过Rc驯化基因的补偿突变获得红色果皮。我们的研究结果表明，伊比利亚杂草在基因组的多个位置经历了选择，成为杂草，可能针对雄性育性基因以及其他功能。我们对伊比利亚杂草稻的描述增加了越来越多的证据，证明栽培稻品种的去驯化是世界范围内杂草稻的主要来源。它们进化的多样性解释了为什么杂草稻仍然是栽培稻中最有问题的杂草之一。
Societal Impact StatementWeedy plants are a major constraint on agricultural productivity. Weedy rice is a weed that invades rice fields worldwide and is responsible for reductions in rice yields. Studies to date have detected multiple independent weedy rice origins in different parts of the world. We investigated the origin of weedy rice in Spain and Portugal and found that it has evolved from a cultivated rice variety group grown locally. Iberian weeds carry mutations that reverse domesticated pericarp color to its ancestral red color. Our results imply that management strategies are needed to prevent the evolution of troublesome weeds from cultivated ancestors.SummaryWeedy rice, a damaging conspecific weed of cultivated rice, has arisen multiple times independently around the world. Understanding all weedy rice origins is necessary to create more effective weed management strategies. The origins of weedy rice in Spain and Portugal, where there are no nativeOryzaspecies, are unknown. In this study, we try to identify the likely ancestors of Iberian weedy rice and the mechanisms involved in the evolution of two weedy traits, seed shattering, and red pericarps.We used genotyping by sequencing to understand the origin of Iberian weedy rice and its relationship to other weedy, wild, and cultivated rice groups worldwide. We also genotyped candidate genes for shattering and pericarp color.We find that weedy rice in the Iberian Peninsula has primarily evolved through de‐domestication oftemperate japonicacultivars, with minor origins from exotic weedy rice. Iberian weeds have evolved the capacity to shatter seeds via novel loci and have acquired red pericarps via compensatory mutations in theRcdomestication gene. Our results suggest the Iberian weeds have experienced selection at multiple locations in the genome to establish as weeds, likely targeting male fertility genes among other functions.Our characterization of Iberian weedy rice adds to the growing evidence that de‐domestication of cultivated rice varieties is the main source of weedy rice worldwide. Their evolutionary versatility explains why weedy rice continues to be one of the most problematic weeds of cultivated rice.