논문 (학술지)
Translational control of phloem development by RNA G-quadruplex-JULGI determines plant sink strength
| 등록번호 | RPMS-2018-0190692507 | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
|---|---|---|---|
| 저자명 (주·공동저자) | Cho Hyunwoo; Cho Hyun Seob; Nam Hoyoung; Jo Hunho; Yoon Joonseon; Park Chanyoung; Dang Tuong Vi T.; Kim Eunah; Jeong Jongmin; Park Soyoung; Wallner Eva-Sophie; Youn Hyungjun; Park Jongmin; Jeon Jinseong; Ryu Hojin; Greb Thomas; Choi Kyuha; Lee Yoontae; Jang Sung Key; Ban Changill; Hwang Ildoo | ||
| 논문구분 | 국외전문학술지 | 학술지명 | NATURE PLANTS |
| ISSN | 2055-026X | 학술지 출판일자 | - |
| 학술지 볼륨번호 | 4 | 논문페이지 | 376 ~ 390 |
| 학술지 임팩트팩터 | 10.3 | 기여율 | 25 % |
| DOI | 10.1038/s41477-018-0157-2 | ||
| 초록 | The emergence of a plant vascular system was a prerequisite for the colonization of land; however, it is unclear how the photosynthate transporting system was established during plant evolution. Here, we identify a novel translational regulatory module for phloem development involving the zinc-finger protein JULGI (JUL) and its targets, the 5' untranslated regions (UTRs) of the SUPPRESSOR OF MAX2 1-LIKE4/5 (SMXL4/5) mRNAs, which is exclusively conserved in vascular plants. JUL directly binds and induces an RNA G-quadruplex in the 5' UTR of SMXL4/5, which are key promoters of phloem differentiation. We show that RNA G-quadruplex formation suppresses SMXL4/5 translation and restricts phloem differentiation. In turn, JUL deficiency promotes phloem formation and strikingly increases sink strength per seed. We propose that the translational regulation by the JUL/5' UTR G-quadruplex module is a major determinant of phloem establishment, thereby determining carbon allocation to sink tissues, and that this mechanism was a key invention during the emergence of vascular plants. | ||
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