Origins of white (Corchorus capsularis L.) and dark (C-olitorius L.) jute: a reevaluation based on nuclear and chloroplast microsatellites
Origins of white (Corchorus capsularis L.) and dark (C-olitorius L.) jute: a reevaluation based on nuclear and chloroplast microsatellites
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DOI：
10.1007/s13562-012-0165-7
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发表时间：
2013-10-01
影响因子：
1.9
通讯作者：
Gupta, Puspendra K.
中科院分区：
文献类型：
--
作者：
Kundu, Avijit;Topdar, Niladri;Gupta, Puspendra K.
利用一套形态特征和中性分子标记，我们重新评估了两个栽培黄麻物种的起源。9 Corchorus物种，这是仅限于非洲和亚洲，表型韧皮纤维产量和质量相关的性状，形态表型分类的基础上，这些性状的相似性，基因型核微卫星和单倍型叶绿体微卫星。这两个种植黄麻品种含有近似70%的中性遗传多样性，目前在其野生亲属。利用38个高度多态性的核微卫星进行系统发育分析，鉴定出C.这两种栽培黄麻的共同祖先是河口人。C. urticifolius是C. olitorius（dark jute），但没有C.可以识别出capsularis（白色黄麻）。尽管C. aestuans或C. pseudo-olitorius或两者似乎是白色黄麻的可能的细胞质祖先，深色黄麻的母系祖先仍然不清楚。然而，在这两个栽培物种中存在一个单一的，独特的叶绿体单倍型，表明其他未知的野生亲缘关系的参与。结合考古植物学证据，我们的研究结果表明，暗黄麻起源于东非赤道地区，但在印度被驯化。我们不能支持白色黄麻起源于印度-缅甸，它也可能起源于非洲，但在亚洲被驯化。
Using a suite of morphological traits and neutral molecular markers, we have reevaluated the origins of the two cultivated jute species. The nine Corchorus species, which are restricted to both Africa and Asia, were phenotyped for bast fibre yield- and quality-linked traits, morpho-phenetically classified based on those traits' similarities, genotyped by nuclear microsatellites and haplotyped by chloroplast microsatellites. The two cultivated jute species contain similar to 70% of the neutral genetic diversity present in their wild relatives. Phylogenetic analyses using 38 highly polymorphic nuclear microsatellites identified C. aestuans as the common ancestor to both the cultivated jute species. C. urticifolius is the nuclear progenitor of C. olitorius (dark jute), but no close nuclear progenitor of C. capsularis (white jute) could be identified. Although either C. aestuans or C. pseudo-olitorius or both appear to be the possible cytoplasmic progenitors of white jute, the matrilineal ancestry of dark jute remains obscure. However, the presence of a single, unique chloroplast haplotype in each of the two cultivated species indicates the involvement of other unknown wild relatives. Taken together with archaeobotanical evidence, our results suggest that dark jute had its origin in equatorial region of east Africa, but was domesticated in India. We could not support an Indo-Myanmar origin of white jute, and possibly it also originated in Africa, but was domesticated in Asia.