Expression of Arabidopsis Bax Inhibitor-1 in transgenic sugarcane confers drought tolerance.
Expression of Arabidopsis Bax Inhibitor-1 in transgenic sugarcane confers drought tolerance.
复制标题
DOI：
10.1111/pbi.12540
复制
发表时间：
2016-09
影响因子：
13.8
通讯作者：
Carrer H
中科院分区：
文献类型：
--
作者：
Ramiro DA;Melotto-Passarin DM;Barbosa Mde A;Santos FD;Gomez SG;Massola Júnior NS;Lam E;Carrer H
全球农作物生产的可持续性在很大程度上取决于提高作物对各种环境胁迫的耐受性。因此，特别是在全球气候模式预期发生变化的情况下，鉴定作物的抗逆性基因已成为当务之急。干旱胁迫是导致作物产量急剧下降的非生物胁迫之一。在这项工作中，我们证明了高度保守的细胞死亡抑制因子Bax Inhibitor-1(Atbi-1)的转基因表达可以提高甘蔗植株对长期(20天)水分胁迫的耐受性。这种健壮的性状与转基因甘蔗植株，特别是在根部，对蛋白质糖基化抑制剂衣霉素诱导的内质网(ER)胁迫的耐受性增加有关。我们的发现表明，抑制包括高粱和玉米等重要作物在内的C4禾草的内质网应激，可能是提高对长期缺水的耐受性的有效手段。这一结果可能会提高世界主要农作物的复原力和产量。
The sustainability of global crop production is critically dependent on improving tolerance of crop plants to various types of environmental stress. Thus, identification of genes that confer stress tolerance in crops has become a top priority especially in view of expected changes in global climatic patterns. Drought stress is one of the abiotic stresses that can result in dramatic loss of crop productivity. In this work, we show that transgenic expression of a highly conserved cell death suppressor, Bax Inhibitor‐1 from Arabidopsis thaliana (AtBI‐1), can confer increased tolerance of sugarcane plants to long‐term (>20 days) water stress conditions. This robust trait is correlated with an increased tolerance of the transgenic sugarcane plants, especially in the roots, to induction of endoplasmic reticulum (ER) stress by the protein glycosylation inhibitor tunicamycin. Our findings suggest that suppression of ER stress in C4 grasses, which include important crops such as sorghum and maize, can be an effective means of conferring improved tolerance to long‐term water deficit. This result could potentially lead to improved resilience and yield of major crops in the world.
登录
查看更多内容
影响因子：
6.9
作者：
Drake PL;Froend RH;Franks PJ
通讯作者：
Franks PJ
影响因子：
4.2
作者：
Flexas, J;Medrano, H
通讯作者：
Medrano, H
影响因子：
4.2
作者：
Chaves, MM;Pereira, JS;Pinheiro, C
通讯作者：
Pinheiro, C
影响因子：
6.4
作者：
Azevedo, RA;Alas, RM;Lea, PJ
通讯作者：
Lea, PJ
影响因子：
5.1
作者：
Baek, D;Nam, J;Yun, DJ
通讯作者：
Yun, DJ