ArticleBMC plant biology2022
GIF1 controls ear inflorescence architecture and floral development by regulating key genes in hormone biosynthesis and meristem determinacy in maize.
Article in BMC plant biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 16 citations in OpenAlex.
- Decades' progress and prospects on maize functional genomics and molecular breeding.Science China. Life sciences · 2025Review
- Transcriptomic Insights into the Effects of Inoculation Density inPlants (Basel, Switzerland) · 2025Article
- Identification of key candidate genes regulating hundred-grain weight in the maize inbred line Ye107 from Southern China.Plant cell reports · 2025Article
- How meristems shape plant architecture in cereals-Cereal Stem Cell Systems (CSCS) Consortium.The Plant cell · 2025Review
- Genome-Wide Association Study and Candidate Gene Mining of Husk Number Trait in Maize.International journal of molecular sciences · 2025Article
- Genetic and molecular insights into tiller development and approaches for crop yield improvement.Frontiers in plant science · 2025Review
- An Ethyl Methanesulfonate-InducedPlants (Basel, Switzerland) · 2024Article
- Maize-Azospirillum brasilense interaction: accessing maize's miRNA expression under the effect of an inhibitor of indole-3-acetic acid production by the plant.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024Article
- Genome-wide screening of meta-QTL and candidate genes controlling yield and yield-related traits in barley (Hordeum vulgare L.).PloS one · 2024Article
- GWAS and Meta-QTL Analysis of Yield-Related Ear Traits in Maize.Plants (Basel, Switzerland) · 2023Article
- A transcriptional activator effector of Ustilago maydis regulates hyperplasia in maize during pathogen-induced tumor formation.Nature communications · 2023Article
- Maize heat shock proteins-prospection, validation, categorization and in silico analysis of the different ZmHSP families.Stress biology · 2023Article
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundInflorescence architecture and floral development in flowering plants are determined by genetic control of meristem identity, determinacy, and maintenance. The ear inflorescence meristem in maize (Zea mays) initiates short branch meristems called spikelet pair meristems, thus unlike the tassel inflorescence, the ears lack long branches. Maize growth-regulating factor (GRF)-interacting factor1 (GIF1) regulates branching and size of meristems in the tassel inflorescence by binding to Unbranched3. However, the regulatory pathway of gif1 in ear meristems is relatively unknown.
resultIn this study, we found that loss-of-function gif1 mutants had highly branched ears, and these extra branches repeatedly produce more branches and florets with unfused carpels and an indeterminate floral apex. In addition, GIF1 interacted in vivo with nine GRFs, subunits of the SWI/SNF chromatin-remodeling complex, and hormone biosynthesis-related proteins. Furthermore, key meristem-determinacy gene RAMOSA2 (RA2) and CLAVATA signaling-related gene CLV3/ENDOSPERM SURROUNDING REGION (ESR) 4a (CLE4a) were directly bound and regulated by GIF1 in the ear inflorescence.
conclusionsOur findings suggest that GIF1 working together with GRFs recruits SWI/SNF chromatin-remodeling ATPases to influence DNA accessibility in the regions that contain genes involved in hormone biosynthesis, meristem identity and determinacy, thus driving the fate of axillary meristems and floral organ primordia in the ear-inflorescence of maize.
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