Taxonomic significance of trichomes in the genus Acanthopsis Harv. (Acanthaceae, tribe Acantheae)

Steyn, H.M.; Wyk, A.E. van

doi:10.5252/adansonia2021v43a14

Cited by 5 publications

(5 citation statements)

References 31 publications

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“…They will be important to solving taxonomic problems such as identification, delimitation, classification, and arranging interrelationships among the plant groups (Wang et al 2015;Khan et al 2017;Wetzel et al 2017;Cheryatova 2020;Nikmah et al 2020). The leaf anatomical characters such as foliar epidermis especially epidermal cells, stomata and trichomes are useful in the identification and delimitation of many plant groups (AbdulRahaman et al 2014;Chaudhari et al 2014;Uka et al 2015;Haron et al 2015;Khan et al 2018;Zhang et al 2018;Steyn and Van Wyk 2021).…”

Section: Introductionmentioning

confidence: 99%

Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

Suratman

SURANTO²,

MUZZAZINAH³

et al. 2022

Biodiversitas

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Abstract. Suratman, Suranto, Muzzazinah, Purnomo. 2022. Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications. Biodiversitas 23: 3705-3720. The objective of this study was to evaluate leaf anatomical character variation among species of Strobilanthes s.l. from Sumatra. A total of 35 species from four genera previously recognized within the subtribe Strobilanthineae (Strobilanthes, Hemigraphis, Sericocalyx, Semnostachya) were used for leaf paradermal section observations. A total of seventeen leaf anatomical characters consisting of ten quantitative and seven qualitative characters were selected for leaf anatomical comparison. The quantitative and qualitative character analysis showed great variability in the majority of tested leaf anatomical characters. This result indicates the large diversity of leaf anatomical characters occurs among species of Strobilanthes s.l. A similarity dendrogram among species of Strobilanthes s.l. based leaf anatomical character data revealed two major clusters. The first cluster consists of eleven species with regular epidermal cell shape and straight cell wall with a similarity coefficient of 0.67. The second cluster consists of twenty four species that differed from species in the first cluster due to their irregular epidermal cell shape and undulate anticlinal cell wall with a similarity coefficient of 0.59. This study indicates that leaf anatomical characters are valuable taxonomic features in taxa delimitation at the species level. The results of this study also support earlier works through molecular studies that all members of the Strobilanthinae then accepted as Strobilanthes s.l. group which could not be easily split into smaller component genera.

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Section: Introductionmentioning

confidence: 99%

Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

Suratman

SURANTO²,

MUZZAZINAH³

et al. 2022

Biodiversitas

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“…From another point of view, according to [25], no correlation could be demonstrated between hair types and habitat (degree of aridity) or geographical distribution. Hairiness, in general, acts as a screen that reflects sunlight [26].…”

Section: Discussionmentioning

confidence: 97%

“…Some plants can tolerate high levels of metals, thanks to cysteine-rich defensive proteins [30] secreted in glandular trichomes, as shown in cadmium-and zinc-tolerant tobacco via their trichomes [31]. Some hairs could also play a role in water absorption in semi-desert habitats [25,32].…”

Section: Discussionmentioning

confidence: 99%

Leaf Morphological and Epidermal Traits Variability along Environmental Gradients in Ten Natural Populations of Pistacia lentiscus

Doghbage,

Belhadj,

Belhouadjeb

et al. 2023

Life

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The species belonging to the genus Pistacia possess ecological, economic, and medicinal value. They show a very high ecological plasticity. This research is a contribution to the study of the intraspecific diversity and variability of 10 populations of Pistacia lentiscus in different bioclimates. Nine locations in Algeria and one site in France have been selected in order to understand the strategies developed by this species under extreme conditions, including altitude and aridity, and to identify the adaptive processes that can be observed based on the morphological and ultrastructural features of the leaf. As a result of this research, we have collected a large quantity of important information on morphological and microphytodermal leaf variability for the ten studied populations. The statistical analyses showed a very important difference in the studied characteristics between these populations. It has been demonstrated that environmental factors also have a significant impact on the heterogeneity of most measured leaf features. Moreover, the observations with the scanning electron microscope (SEM) enabled us to highlight new characteristics of the studied species, such as the glandular trichomes on the leaflets and embedded stomata in the epidermis. These criteria could supplement the existing morphological characteristics used in the systematic classification of the Pistacia genus. Overall, the studied species have shown xeromorphy features, which give them the opportunity to be used in desertification mitigation programs, due to their ability to withstand conditions of extreme aridity.

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“…"Leaf anatomy characters are considered the second most important characters after flowers and fruits in taxonomic studies" Chauhan & Daniel (2011). Many plant groups can be known and delimited using leaf anatomical characters such as foliar epidermis, particularly epidermal cells, stomata, and trichomes [ Zhang et al (2018), Steyn & Van Wyk (2021)]. The shape and size of stomata are also taxonomically important, and the distribution of stomata and their frequency has taxonomic and phylogenetic significance Tahir et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Epidermal characters of Rosa L. and Rubus L. (Rosaceae) from Iraq and their taxonomic value.

Sadeeq

2024

Preprint

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The leaf epidermal structure of thirteen taxa from the genera Rosa L. and Rubus L. (Rosaceae family), which grow obviously within the Kurdistan Region of Iraq, is investigated via light microscopy. All taxa have the type of anomocytic stomata on the abaxial surface, and no stomata are present on the adaxial surface. Within the genus Rubus, R. sanctus can be distinguished from R. caesuis by the anticlinal wall patterns on the adaxial and abaxial surfaces and the shape of the epidermal cells on the abaxial side. In Rosa, the shape of the epidermal cells on the abaxial surface varies from polygonal and polygonal-slightly irregular to irregular. R. canina var. deseglsei can be recognized by the abaxial surface’s anticlinal wall pattern and the epidermal cells’ shape. Although R. foetida had larger epidermal cell densities on all surfaces, it lacked the necessary taxonomical support to distinguish our Rosa genus taxa. Stomatal density as a range and stomata index could be valuable two diagnostic features for separating R. hemispharica from the remaining taxa of the genus Rosa. The taxa of Section: Pimpinellifoliae can be separate by the patterns of anticlinal walls of the abaxial surface from the remaining taxa of Sections: Caninae and Gallicanae within Subgenus: Rosa under study. According to our findings, some leaf epidermal characteristics and stomata are advantageous for distinguishing the various taxonomic ranks of the genera Rosa and Rubus family Rosaceae.

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Taxonomic significance of trichomes in the genus Acanthopsis Harv. (Acanthaceae, tribe Acantheae)

Cited by 5 publications

References 31 publications

Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

Leaf anatomical characters variation of Strobilanthes s.l. from Sumatra, Indonesia and its taxonomic implications

Leaf Morphological and Epidermal Traits Variability along Environmental Gradients in Ten Natural Populations of Pistacia lentiscus

Epidermal characters of Rosa L. and Rubus L. (Rosaceae) from Iraq and their taxonomic value.

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