Sisaphaithong Thongkhoun, Hanai Shinichi, Tomioka Rie, Kobae Yoshihiro, Tanaka Aiko, Yano Katsuya, Takenaka Chisato, Hata Shingo
a Graduate School of Bioagricultural Sciences, Nagoya University , Chikusa-ku , Nagoya , Japan.
b Faculty of Agriculture, Ryukoku University , Seta Oe-cho, Otsu , Shiga , Japan.
Plant Signal Behav. 2017 Jan 2;12(1):e1274483. doi: 10.1080/15592324.2016.1274483.
Seedlings of three rice (Oryza sativa L.) varieties (one indica, ARC5955; and two japonica, Nipponbare and Koshihikari) with or without pre-colonization by the arbuscular mycorrhizal fungus Funneliformis mosseae were transplanted into an upland field and grown to maturity. Pre-colonization had no effect on the yield of Nipponbare or Koshihikari. However, pre-colonized ARC5955 exhibited a strong tendency toward increased yield, which was accompanied by increases in the percentage of ripened grain and the 1000-grain weight. The rice roots were also colonized by indigenous arbuscular mycorrhizal fungi in the field, but these had only limited effects on shoot biomass and grain yields. We speculate that F. mosseae may have exhibited priority effects, allowing it to dominate the rice roots. There was no significant difference in the contents of most mineral elements in the shoots of pre-colonized ARC5955 at harvest, indicating that some other factor is responsible for the observed yield increase.
将三种水稻（Oryza sativa L.）品种（一种籼稻，ARC5955；两种粳稻，日本晴和越光）的秧苗，无论是否预先被丛枝菌根真菌摩西管柄囊霉定殖，移植到旱地田中并生长至成熟。预先定殖对日本晴或越光的产量没有影响。然而，预先定殖的ARC5955表现出产量增加的强烈趋势，同时成熟籽粒百分比和千粒重也增加。水稻根系在田间也被本地丛枝菌根真菌定殖，但这些对地上部生物量和籽粒产量的影响有限。我们推测摩西管柄囊霉可能表现出优先效应，使其能够在水稻根系中占据主导地位。收获时，预先定殖的ARC5955地上部大多数矿质元素含量没有显著差异，表明观察到的产量增加是由其他因素造成的。
