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Multiple Areas Investigation Reveals the Genes Related to Vascular Bundles in Rice

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Journal Rice (N Y)
Date 2019 Mar 23
PMID 30900100
Citations 8
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Abstract

Background: The vascular bundle in the panicle neck is a crucial trait in rice (Oryza sativa) production that differs between the indica and japonica subspecies. However, the effect of indica/japonica genetic background on the vascular bundles remains unknown.

Results: A series of recombinant inbred lines (RILs) derived from a cross between japonica and indica were planted in three areas. High-throughput sequencing was conducted to determine the indica pedigree percentage and for quantitative trait locus (QTL) analysis. The indica pedigree affected the number of large vascular bundles (LVBs), but not the number of small vascular bundles (SVBs). QTL analysis identified a locus (qLVB9) that was pleiotropic for both LVBs and SVBs in all three areas, and qLVB9 appeared synonymous with DENSE AND ERECT PANICLE 1 (DEP1). Using CRISPR/Cas9 gene editing and gene overexpression technology, we confirmed that the truncated dep1 allele increased the number of LVBs, and resulted in LVBs more closely associated to the indica pedigree. RNA sequencing showed that the truncated dep1 allele downregulated the AP2-like gene family. The double mutant for the DEP1 and AP2-like genes (OsAP2-39) showed decreased endogenous abscisic acid (ABA) level and insensitivity to exogenous ABA treatment, confirming that both DEP1 and OsAP2-39 are involved in the ABA response mechanism.

Conclusions: The present study showed the qLVB9/DEP1 affects LVBs, and involved in ABA signaling via regulating the AP2-like gene family. These results offer new insights into the function of qLVB9/DEP1 in rice.

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References
1.
Terao T, Nagata K, Morino K, Hirose T . A gene controlling the number of primary rachis branches also controls the vascular bundle formation and hence is responsible to increase the harvest index and grain yield in rice. Theor Appl Genet. 2010; 120(5):875-93. DOI: 10.1007/s00122-009-1218-8. View

2.
Fujita D, Trijatmiko K, Tagle A, Sapasap M, Koide Y, Sasaki K . NAL1 allele from a rice landrace greatly increases yield in modern indica cultivars. Proc Natl Acad Sci U S A. 2013; 110(51):20431-6. PMC: 3870739. DOI: 10.1073/pnas.1310790110. View

3.
Hsu P, Scott D, Weinstein J, Ran F, Konermann S, Agarwala V . DNA targeting specificity of RNA-guided Cas9 nucleases. Nat Biotechnol. 2013; 31(9):827-32. PMC: 3969858. DOI: 10.1038/nbt.2647. View

4.
Cui K, Peng S, Xing Y, Yu S, Xu C, Zhang Q . Molecular dissection of the genetic relationships of source, sink and transport tissue with yield traits in rice. Theor Appl Genet. 2003; 106(4):649-58. DOI: 10.1007/s00122-002-1113-z. View

5.
Qi J, Qian Q, Bu Q, Li S, Chen Q, Sun J . Mutation of the rice Narrow leaf1 gene, which encodes a novel protein, affects vein patterning and polar auxin transport. Plant Physiol. 2008; 147(4):1947-59. PMC: 2492643. DOI: 10.1104/pp.108.118778. View