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Getting closer: vein density in C 4 leaves
Author(s) -
Kumar Dhinesh,
Kellogg Elizabeth A.
Publication year - 2019
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/nph.15491
Subject(s) - biology , photosynthesis , evolutionary biology , transcription factor , adaptation (eye) , identification (biology) , computational biology , botany , gene , neuroscience , genetics
ContentsSummary 1260 I. Introduction 1260 II. Molecular and genetic mechanisms of C 4 leaf venation 1262 III. Conclusions and future perspectives 1266Acknowledgements 1266References 1266Summary C 4 grasses are major contributors to the world's food supply. Their highly efficient method of carbon fixation is a unique adaptation that combines close vein spacing and distinct photosynthetic cell types. Despite its importance, the molecular genetic basis of C 4 leaf development is still poorly understood. Here we summarize current knowledge of leaf venation and review recent progress in understanding molecular and genetic regulation of vascular patterning events in C 4 plants. Evidence points to the interplay of auxin, brassinosteroids, SHORTROOT / SCARECROW and INDETERMINATE DOMAIN transcription factors. Identification and functional characterization of candidate regulators acting early in vascular development will be essential for further progress in understanding the precise regulation of these processes.