同时携带耐淹基因SUB1A-1和漂浮基因SNORKELs的水稻品种在完全淹水条件下的生长响应

IF 1.6 3区农林科学 Q2 AGRONOMY

Plant Production Science Pub Date : 2021-07-12 DOI:10.1080/1343943X.2021.1943465

Shunsuke Oe, Daisuke Sasayama, Quanshu Luo, H. Fukayama, T. Hatanaka, T. Azuma

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引用次数: 6

摘要

摘要我们筛选了80个亚洲水稻（Oryza sativa L.）品种的耐淹基因SUB1A-1和漂浮基因SNORKEL1（SK1）和SNORKEL2（SK2），发现深水水稻品种Baisbish（BSB）和耐淹品种Flood Resistant 13A（FR13A）都具有SUB1A-1或SK1/2。当BSB和FR13A幼苗完全浸没时，BSB诱导了芽的细长生长，而FR13A则没有。浸没显著增加了BSB和FR13A芽中SUB1A-1转录物的丰度，但BSB中的表达水平远低于FR13A。浸没还诱导了FR13A芽中ERF66和ERF67（SUB1A-1的转录靶标）的表达，而它上调了BSB芽中ERF6的表达，但没有上调ERF66的表达。这些结果表明，由于SUB1A-1和/或ERF66在浸没下的低表达，BSB不能显示出浸没耐受性。图形摘要

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Growth responses of seedlings under complete submergence in rice cultivars carrying both the submergence-tolerance gene SUB1A-1 and the floating genes SNORKELs

ABSTRACT We screened 80 Asian rice (Oryza sativa L.) cultivars for the presence of the submergence-tolerance gene SUB1A-1 and the floating genes SNORKEL1 (SK1) and SNORKEL2 (SK2), and found that the deepwater rice cultivar Baisbish (BSB) and the submergence-tolerant cultivar Flood Resistant 13A (FR13A) both possess the SUB1A-1 and the SK1/2. When BSB and FR13A seedlings were completely submerged, spindly growth of shoots was induced in BSB but not in FR13A. Submergence significantly increased the SUB1A-1 transcript abundance in BSB and FR13A shoots, but the expression level in BSB was much lower than that of FR13A. Submergence also induced the expression of both ERF66 and ERF67, the transcriptional targets of SUB1A-1, in FR13A shoots, whereas it upregulated the expression of ERF67 but not that of ERF66 in BSB shoots. These results suggest that BSB could not display submergence tolerance due to the low expression of SUB1A-1 and/or ERF66 under submergence. Graphical abstract

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来源期刊

Plant Production Science 农林科学-农艺学

CiteScore

5.10

自引率

4.00%

发文量

审稿时长

>36 weeks

期刊介绍： Plant Production Science publishes original research reports on field crops and resource plants, their production and related subjects, covering a wide range of sciences; physiology, biotechnology, morphology, ecology, cropping system, production technology and post harvest management. Studies on plant production with special attention to resource management and the environment are also welcome. Field surveys on cropping or farming system are also accepted. Articles with a background in other research areas such as soil science, meteorology, biometry, product process and plant protection will be accepted as long as they are significantly related to plant production.