Phylogenetic, Developmental and Functional Aspects of Stomatal Patterning: Lessons from Magnoliids

The magnoliid clade encompasses 18 extant families arranged in four orders, plus several extinct taxa, including some of the most ancient angiosperm fossils. The clade is characterized by paracytic stomata with a distinct pair of lateral subsidiary cells that flank the guard cells, though other stom...

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Bibliographic Details
Published in:The Botanical review 2023-03, Vol.89 (1), p.1-18
Main Author: Rudall, Paula J.
Format: Article
Language:English
Subjects:
Amplification
Biomedical and Life Sciences
Botanical research
Cell size
Developmental stages
Fossils
Guard cells
Identification and classification
Life Sciences
Magnoliidae
Pattern formation
Phylogeny
Physiological aspects
Plant Anatomy/Development
Plant Ecology
Plant Physiology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Stomata
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Summary:The magnoliid clade encompasses 18 extant families arranged in four orders, plus several extinct taxa, including some of the most ancient angiosperm fossils. The clade is characterized by paracytic stomata with a distinct pair of lateral subsidiary cells that flank the guard cells, though other stomatal types are also reported, including anomocytic and anisocytic. In contrast with monocots, the paracytic stomata of magnoliids develop from linear triads, and the lateral subsidiary cells are stomatal-lineage ground cells (SLGCs). Anisocytic stomata typically possess three SLGCs. Amplifying divisions are rare in magnoliids, but occur in some Piperales, in association with anisocytic stomata. Differences in mature stomatal types result from differences in cell shape and polarity at critical developmental stages. Stomatal clusters have been reported in Cinnamomum (Lauraceae) and Galbulimima (Himantandraceae), but neither are apparently formed by amplifying divisions, in contrast with eudicots. In Galbulimima , each peltate scale hair is surrounded by a ring of 3–8 non-contiguous stomata, each derived from different initial meristemoids.
ISSN:0006-8101
1874-9372
DOI:10.1007/s12229-023-09287-9