Multiple areas investigation reveals the genes related to vascular bundles in rice
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...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-03-01
|
| Series: | Rice |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12284-019-0278-x |
| _version_ | 1818033454942519296 |
|---|---|
| author | Cheng Fei Xin Geng Zhengjin Xu Quan Xu |
| author_facet | Cheng Fei Xin Geng Zhengjin Xu Quan Xu |
| author_sort | Cheng Fei |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-10T06:23:32Z |
| format | Article |
| id | doaj.art-c327bf2857ed45ab914a406c0e3debf2 |
| institution | Directory Open Access Journal |
| issn | 1939-8425 1939-8433 |
| language | English |
| last_indexed | 2024-12-10T06:23:32Z |
| publishDate | 2019-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Rice |
| spelling | doaj.art-c327bf2857ed45ab914a406c0e3debf22022-12-22T01:59:16ZengSpringerOpenRice1939-84251939-84332019-03-0112111010.1186/s12284-019-0278-xMultiple areas investigation reveals the genes related to vascular bundles in riceCheng Fei0Xin Geng1Zhengjin Xu2Quan Xu3Rice Research Institute of Shenyang Agricultural UniversityRice Research Institute of Shenyang Agricultural UniversityRice Research Institute of Shenyang Agricultural UniversityRice Research Institute of Shenyang Agricultural UniversityAbstract 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.http://link.springer.com/article/10.1186/s12284-019-0278-xRiceindica/japonica crossVascular bundlesDEP1Abscisic acid |
| spellingShingle | Cheng Fei Xin Geng Zhengjin Xu Quan Xu Multiple areas investigation reveals the genes related to vascular bundles in rice Rice Rice indica/japonica cross Vascular bundles DEP1 Abscisic acid |
| title | Multiple areas investigation reveals the genes related to vascular bundles in rice |
| title_full | Multiple areas investigation reveals the genes related to vascular bundles in rice |
| title_fullStr | Multiple areas investigation reveals the genes related to vascular bundles in rice |
| title_full_unstemmed | Multiple areas investigation reveals the genes related to vascular bundles in rice |
| title_short | Multiple areas investigation reveals the genes related to vascular bundles in rice |
| title_sort | multiple areas investigation reveals the genes related to vascular bundles in rice |
| topic | Rice indica/japonica cross Vascular bundles DEP1 Abscisic acid |
| url | http://link.springer.com/article/10.1186/s12284-019-0278-x |
| work_keys_str_mv | AT chengfei multipleareasinvestigationrevealsthegenesrelatedtovascularbundlesinrice AT xingeng multipleareasinvestigationrevealsthegenesrelatedtovascularbundlesinrice AT zhengjinxu multipleareasinvestigationrevealsthegenesrelatedtovascularbundlesinrice AT quanxu multipleareasinvestigationrevealsthegenesrelatedtovascularbundlesinrice |