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Author Guo F., Zhang P., Wu Y., Lian G., Yang Z., Liu W., Buerte B., Zhou C., Zhang W., Li D., Han N., Tong Z., Zhu M., Xu L., Chen M., Bian H.
Title Rice LEAFY COTYLEDON1 Hinders Embryo Greening During the Seed Development.
Abstract:
LEAFY COTYLEDON1 (LEC1) is the central regulator of seed development in Arabidopsis, while its function in monocots is largely elusive. We generated <i>OsLEC1</i> mutants using CRISPR/Cas9 technology. <i>OsLEC1</i> mutant seeds lost desiccation tolerance and triggered embryo greening at the early development stage. Transcriptome analysis demonstrated that <i>OsLEC1</i> mutation altered diverse hormonal pathways and stress response in seed maturation, and promoted a series of photosynthesis-related genes. Further, genome-wide identification of OsLEC1-binding sites demonstrated that OsLEC1 bound to genes involved in photosynthesis, photomorphogenesis, as well as abscisic acid (ABA) and gibberellin (GA) pathways, involved in seed maturation. We illustrated an OsLEC1-regulating gene network during seed development, including the interconnection between photosynthesis and ABA/GA biosynthesis/signaling. Our findings suggested that OsLEC1 acts as not only a central regulator of seed maturation but also an inhibitor of embryo greening during rice seed development. This study would provide new understanding for the OsLEC1 regulatory mechanisms on photosynthesis in the monocot seed development.
Journal Front Plant Sci
Country China
Volume 13
Pages 887980
Year 2022
PubMed ID 35620685
PubMed Central ID 9128838
DOI 10.3389/fpls.2022.887980
URL -
Relation
Gene EXPA4 EXPA7 EXPB2 EXPB4 EXPB6 FGL GA2OX3 GA2OX6 GA2OX7 GA2OX9 GNP1 HSP90.1 LEA1 LEA15 LEA16 LEA17 LEA18 LEA20 LEA22 LEA3 LEA3-1 LEA30 LEA4 LEC1 LHCA1 LHCA3 NCED1 PC PME12 PME17 PME2 PME22 PME4 PME5 PORA PP2C1 PSAE PSAH PSAL PSAN PSBO PSBP PSBQ PSBW PSBX SDR4 VP1
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
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Stages in Each Organ
- Muant Lines (Gene)
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Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
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