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首页> 外文期刊>Journal of Cotton Science >Does Overexpression of Tomato Fructokinase ( LeFRK1 ) in Cotton Enhance Yield?
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Does Overexpression of Tomato Fructokinase ( LeFRK1 ) in Cotton Enhance Yield?

机译：棉花中番茄果糖激酶（LeFRK1）的过表达会提高产量吗？

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Efforts to identify and introduce single genes that could maintain or increase cotton production in water-limited production settings have resulted in extremely limited success. The primary objective of this investigation was to test whether overexpression of the tomato fructokinase gene, LeFRK1 , in field-grown cotton could improve fiber yield under variable growth conditions and contrasting irrigation levels in warm semi-arid environments characteristic of the Southern High Plains. A secondary goal was to determine whether a larger field-scale experiment might be justified based upon the results of this exploratory work. Cotton overexpressing LeFRK1 was field grown in small plots for three years under irrigation, contrasting irrigation levels, or without irrigation. Increased yield was found when comparing all LeFRK1 lines relative to that of the control line, though seasonal and plant-to-plant variability limited confidence in the extension of results to production scale. We hypothesized that yield improvements resulted from a suite of responses arising from increased availability of photosynthate at the leaf to the whole-plant level to developing fruits. The results suggested that LeFRK1 overexpression might be a viable approach to improving cotton yield in warm, semi-arid environments characteristic of the southwestern U.S. However, field trials under agronomically relevant systems and at agronomically relevant scales are needed to confirm these findings.
机译：鉴定和引入可以在水有限的生产环境中维持或增加棉花产量的单一基因的努力取得的成功极为有限。这项研究的主要目的是检验在田间种植的棉花中番茄果糖激酶基因LeFRK1的过表达是否可以提高可变生长条件下的纤维产量，并在南部高原地区特有的温暖半干旱环境下对比灌溉水平。第二个目标是根据这项探索性工作的结果，确定是否可以进行较大规模的实验。过量表达LeFRK1的棉花在小块田中在灌溉条件下（对比灌溉水平或不灌溉）种植了三年。将所有LeFRK1品系与对照品系进行比较时，发现产量增加，尽管季节性和植物间变异性限制了将结果扩展至生产规模的信心。我们假设产量的提高是由于一系列响应的结果，这些响应是从叶片到整个植物水平的光合产物可用性的增加而产生的。结果表明LeFRK1过表达可能是提高美国西南部特征的温暖半干旱环境下棉花产量的可行方法。但是，需要在农业相关系统和农业相关规模下进行田间试验以确认这些发现。

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