Leaf anatomy of Mallotus and the related genera Blumeodendron and Hancea (Euphorbiaceae sensu stricto)

Pečnikar, Živa Fišer; Kulju, Kristo K. J.; Sierra, Soraya; Baas, Pieter; Welzen, P.C. van

doi:10.1111/j.1095-8339.2012.01227.x

Cited by 10 publications

(20 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence, position, and type of secretory structures have been used to support or clarify phylogenetic relationships among several angiosperm groups as well as to understand evolutionary patterns of lineage diversification (Dickson, 2000; Tilney and van Wyk, 2004; Marazzi et al, 2006; Delgado et al, 2009; Araújo et al, 2010; De‐Paula et al, 2011, Coutinho et al, 2012, 2013; Pečnikar et al, 2012; Weber and Keeler, 2013; Angulo and Dematteis, 2014). Likewise, secretory structures have been relevant in the taxonomy and phylogenetics of groups within Crotonoideae and Crotoneae (Caruzo et al, 2011; De‐Paula et al, 2011; van Ee et al, 2011; Riina et al, 2014).…”

mentioning

confidence: 99%

Foliar secretory structures in Crotoneae (Euphorbiaceae): Diversity, anatomy, and evolutionary significance

Vitarelli

Riina

Caruzo

et al. 2015

American J of Botany

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

Foliar secretory structures in Crotoneae (Euphorbiaceae): Diversity, anatomy, and evolutionary significance

Vitarelli

Riina

Caruzo

et al. 2015

American J of Botany

View full text Add to dashboard Cite

show abstract

“…Guard cell lignification (Lacourse et al, 2016), striations (Barclay et al, 2007), and the presence of two size classes of stomata, including giant stomata (Fišer Pe cnikar et al, 2012), have also been examined for taxonomic purposes. The problem of using fossil stomatal traits in taxonomy and systematics is that some traits "show some genetically uncontrolled variability" (Baranova, 1992) with specific traits showing greater variability than others (Barclay et al, 2007;Cleal and Shute, 2012;Jordan et al, 2014;Lacourse et al, 2016).…”

mentioning

confidence: 99%

Paleoecology, Ploidy, Paleoatmospheric Composition, and Developmental Biology: A Review of the Multiple Uses of Fossil Stomata

McElwain

2017

Plant Physiol.

View full text Add to dashboard Cite

ORCID IDs: 0000-0002-1729-6755 (J.C.M.); 0000-0002-7893-1142 (M.S.).The presence of stomata is a diagnostic trait of all living and extinct land plants with the exception of liverworts. They are preserved widely in the fossil record from anatomically pristine stomatal complexes on permineralized and charcoalified stems of the earliest land plants dating back .400 million years to isolated guard cell pairs in quaternary aged palynological samples. Detailed study of fossil stomatal complexes has been used to track the evolution of genome size and to reconstruct atmospheric composition, to circumscribe new species to science, and to bring ancient landscapes to life by providing both habitat information and insights on fossil plant ecophysiological function and life form. This review explores how fossil stomata can be used to advance our understanding of plant, environment, and atmospheric evolution over the Phanerozoic. We compare the utility of qualitative (e.g. presence/absence of stomatal crypts) versus quantitative stomatal traits (e.g. amphistomaty ratio) in paleoecological reconstructions. A case study on Triassic-Jurassic Ginkgoales is provided to highlight the methodological difficulty of teasing apart the effect of genome size, ploidy, and environment on guard cell size evolution across mass extinction boundaries. We critique both empirical and mechanistic stomatal-based models for paleoCO 2 reconstruction and highlight some key limitations and advantages of both approaches. Finally, we question if different stomatal developmental pathways have ecophysiological consequence for leaf gas exchange and ultimately the application of different stomatal-based CO 2 proxy methods. We conclude that most studies currently only capture a fraction of the potential invaluable information that can be gleaned from fossilized stomata and highlight future approaches to their study that better integrate across the disciplinary boundaries of paleobotany, developmental biology, paleoecology, and plant physiology.The fossil record of land plants (embryophytes) dates back unequivocally to the Middle Ordovician (;460 million years ago [mya]). This is supported by the presence of spore tetrads contained within an enveloping sporangium (Wellman et al., 2003). Since Wellman's discovery, the fossil spore record has revealed older and older spores of various morphologies (naked, enveloped) and configurations (singular, paired, etc.) that may eventually push back even further the accepted date of the oldest land plant (Wellman and Strother, 2015). This early phase in land plant evolution is complex to interpret, however, since no stomata have been discovered so far on the earliest fossilized land plants, suggesting perhaps that they may have been absent, as is the case for the early land plants' algal predecessors. As soon as sheets of fossilized cuticle with true stomata started to appear in Siluran aged (443-419 mya) sediment samples, our ability to taxonomically separate charophyacean algae from land plants based on fragmentary foss...

show abstract

“…Arg. and Manihot esculenta Crantz in this family made it one of the worldʼs important plant families 4 .…”

Section: Introductionmentioning

confidence: 99%

Leaf Anatomical Studies of Alchornea Sw., Mallotus Lour. and Macaranga Thou. (Euphorbiaceae) from Some Parts of Nigeria

Ekeke¹,

Ogazie²,

Agogbua³

2023

J. of Plant Sciences

View full text Add to dashboard Cite

Background and Objective: The members of the genera Alchornea, Mallotus and Macaranga from Euphorbiaceae are closely related and difficult to differentiate. The leaf anatomy of these genera was studied to determine the interspecific and inter-generic variation among these taxa. Materials and Methods: Epidermal peels of the leaves were made with forceps. The petiole and midribs were fixed in FAA, dehydrated, sectioned, stained, observed and photo-micrographs taken with a trinocular research microscope (Amscope T340B) fitted with Amscope digital camera. Results: These genera share some similar characteristics such as paracytic stomata, trichome types, vascular bundle type and arrangement, petiole and midrib outlines, layers of palisade and spongy mesophylls, crystal (druses) distribution, etc., in common. Although some of these characteristics overlap among these taxa some of them such as trichome type, stomata type and distribution, crystal (druses) distribution, midrib and petiole vascular bundle pattern, etc., could be diagnostic at species and generic levels. We observed the peltate glandular hairs only on the adaxial surface of Mallotus oppositifolius and Mallotus subulatus but not in the other genera (Alchornea and Macaranga) studied. This character made this genus distinct from Alchornea and Macaranga. Conclusion:Trichome types, stomata types, petiole and midrib vascular bundle patterns and crystal (druses) distribution were diagnostic at species and generic levels and could be used to differentiate these taxa.

show abstract

Leaf anatomy of Mallotus and the related genera Blumeodendron and Hancea (Euphorbiaceae sensu stricto)

Cited by 10 publications

References 26 publications

Foliar secretory structures in Crotoneae (Euphorbiaceae): Diversity, anatomy, and evolutionary significance

Foliar secretory structures in Crotoneae (Euphorbiaceae): Diversity, anatomy, and evolutionary significance

Paleoecology, Ploidy, Paleoatmospheric Composition, and Developmental Biology: A Review of the Multiple Uses of Fossil Stomata

Leaf Anatomical Studies of Alchornea Sw., Mallotus Lour. and Macaranga Thou. (Euphorbiaceae) from Some Parts of Nigeria

Contact Info

Product

Resources

About