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The potential application of genome editing by using CRISPR/Cas9, and its engineered and ortholog variants for studying the transcription factors involved in the maintenance of phosphate homeostasis in model plants.
Seminars in Cell & Developmental Biology ( IF 6.2 ) Pub Date : 2019-04-07 , DOI: 10.1016/j.semcdb.2019.03.010
Anupam Jyoti 1 , Sanket Kaushik 1 , Vijay Kumar Srivastava 1 , Manali Datta 1 , Shailesh Kumar 1 , Poli Yugandhar 2 , Shanker L Kothari 1 , Vandna Rai 3 , Ajay Jain 1
Affiliation  

Phosphorus (P), an essential macronutrient, is pivotal for growth and development of plants. Availability of phosphate (Pi), the only assimilable P, is often suboptimal in rhizospheres. Pi deficiency triggers an array of spatiotemporal adaptive responses including the differential regulation of several transcription factors (TFs). Studies on MYB TF PHR1 in Arabidopsis thaliana (Arabidopsis) and its orthologs OsPHRs in Oryza sativa (rice) have provided empirical evidence of their significant roles in the maintenance of Pi homeostasis. Since the functional characterization of PHR1 in 2001, several other TFs have now been identified in these model plants. This raised a pertinent question whether there are any likely interactions across these TFs. Clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 (Cas9) system has provided an attractive paradigm for editing genome in plants. Here, we review the applications and challenges of this technique for genome editing of the TFs for deciphering the function and plausible interactions across them. This technology could thus provide a much-needed fillip towards engineering TFs for generating Pi use efficient plants for sustainable agriculture. Furthermore, we contemplate whether this technology could be a viable alternative to the controversial genetically modified (GM) rice or it may also eventually embroil into a limbo.

中文翻译:

通过使用CRISPR / Cas9及其工程和直系同源变体进行基因组编辑的潜在应用,以研究参与维持模型植物磷酸盐体内平衡的转录因子。

磷(P)是必需的大量营养素,对植物的生长和发育至关重要。唯一可吸收的磷磷酸盐(Pi)的可用性在根际中通常不是最理想的。Pi缺乏会触发一系列时空适应性反应,包括几种转录因子(TF)的差异调节。对拟南芥(Arabidopsis)中MYB TF PHR1及其在水稻(稻)中直系同源基因OsPHRs的研究提供了经验证据,表明它们在维持Pi动态平衡中具有重要作用。自从2001年对PHR1进行功能鉴定以来,现在已经在这些模型植物中鉴定了其他几个TF。这就提出了一个相关的问题,即这些TF之间是否存在任何可能的交互作用。簇状规则间隔的短回文重复序列(CRISPR)/ CRISPR相关蛋白9(Cas9)系统为编辑植物基因组提供了有吸引力的范例。在这里,我们回顾了该技术在TF基因组编辑中的应用和挑战,以破译它们之间的功能和可能的相互作用。因此,这项技术可以为工程TF提供急需的补充,以产生有效利用Pi的有效植物来实现可持续农业。此外,我们考虑了这项技术是否可以替代有争议的转基因水稻,还是最终陷入困境。我们回顾了该技术在TF基因组编辑中的应用和挑战,以破译它们之间的功能和可能的相互作用。因此,这项技术可以为工程TF提供急需的补充,以产生有效利用Pi的有效植物来实现可持续农业。此外,我们考虑了这项技术是否可以替代有争议的转基因水稻,还是最终陷入困境。我们回顾了该技术在TF基因组编辑中的应用和挑战,以破译它们之间的功能和可能的相互作用。因此,这项技术可以为工程TF提供急需的补充,以产生有效利用Pi的有效植物来实现可持续农业。此外,我们考虑了这项技术是否可以替代有争议的转基因水稻,还是最终陷入困境。
更新日期:2019-04-07
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