Leaf morphology and venation of Psidium species from the Brazilian Savanna

Oliveira, Elaine Ferreira de; Bezerra, Debborah Gonçalves; Santos, Mirley Luciene dos; Rezende, Maria Helena; Paula, Joelma Abadia Marciano de

doi:10.1016/j.bjp.2017.03.005

Cited by 17 publications

(17 citation statements)

References 18 publications

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“…This successful delineation of selected leaf architecture characters using the using cluster analysis were also observed in the works of Loufty et al (2005) in Ficus L species, Sharma et al (2016) in Mangifera indica varieties, Oliveira et al (2017) in Psidium species and Lu et al (2012) in Camella species. Similarly, studies in Hoya (Salvaña and Buot 2014; Jumawan and Buot 2016; Villareal and Buot 2015; Torrefiel and Buot 2017), Psychotria (Banaticla and Buot 2004), Terminalia (Baroga and Buot 2014), Cinnamomum (Celadiña et al 2012), and Shorea (Pulan and Buot 2014) proved successful species delineation using leaf architecture.…”

Section: Resultssupporting

confidence: 72%

“…Across and within species, leaves are extremely diverse in venation architecture and despite phenotypic plasticity, have genetically-fixed and established venation patterns which are significant when dealing with sterile fossil plants (Roth-Nebelsick et al 2001). In fact, Oliveira et al (2017) found that leaf morphology and venation can be used to delineate four problematic species of Psidium namely P. firmum, P. guineense, P. myrsinites and P. lamotteanum.…”

Section: Resultsmentioning

confidence: 99%

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Delineation of the selected Cucumis L. species and accessions using leaf architecture characters

Masungsong

Belarmino²,

Buot

2019

Biodiversitas

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Abstract. Masungsong LA, Belarmino MM, Buot IEJr. 2019. Delineation of the selected Cucumis L. species and accessions using leaf architecture characters. Biodiversitas 20: 629-635. Regardless of the several attempts of the early and recent studies to separate the wild species of Cucumis from the cultivated ones, there is still taxonomic confusion brought about by the similarities in morphology of the genus. In a gene bank with so many species and accessions of Cucumis stored, it is appropriate to delineate these numerous accessions to save time and resources as well. This study aims to delineate fifty selected Cucumis accessions based on leaf architecture. Using Unweighted Pair Group Method using Averages (UPGMA) and Euclidean distance coefficient, a cluster analysis for the fifty Cucumis accessions was done. A dendogram with cophenetic coefficient of 0.9606 supported the clustering of the Cucumis species and accessions. At Eucledian distance of 1.5 two major clusters were formed on the basis of secondary vein spacing. Cucumis melo accessions separated from all the remaining accessions of C. myriocarpus, C. metuliferus, C. anguria and C. anguria var longaculeatus for having an increasing towards the base secondary vein spacing while the rest have irregular pattern of secondary vein spacing. Further sub-clustering of the remaining accessions comprising four species were delineated on the basis of tertiary vein (C. myriocarpus), tertiary vein angle to primary (C. metuliferus), and blade class (C. anguria and C. anguria var longaculeatus). Laminar shape delineated C. myriocarpus accessions from each other, apex angle for C. metuliferus accessions, and primary vein size for C. melo accessions. Results implied that leaf architecture is a good tool to classify the numerous accessions of Cucumis.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Delineation of the selected Cucumis L. species and accessions using leaf architecture characters

Masungsong

Belarmino²,

Buot

2019

Biodiversitas

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“…Concerning to the psyllids feeding behaviour, we collected electropenetrography data from T. limbata and observed that the nymphs feed on both xylem and phloem vessels in the smallest vein (Mayara Moledo Picanço, unpublished data). As the psyllids are tiny insects and guava leaves have brochidodromous secondary venation [55,56], we suggest that feeding on the small quaternary and or quinternary vein in the leaves edge allow them to avoid the high pressure of the phloem and xylem in the primary and secondary larger vessels.…”

Section: Discussionmentioning

confidence: 99%

The Psyllids Triozoida Limbata Supplant the Defenses of Psidium Guajava Plants to Garentee Feeding and Protection

Picanço

Carmo

Azevedo

et al. 2020

Preprint

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Background: Herbivores cause biochemical, physiological, and morphological changes on plants. The ultimate effects of the herbivore activities are damages on the plant's body that can lead from local tissues death to the plant death. The intensity of herbivore attack and the plant's capability to defend itself determine the outcomes of herbivory. When the plant under attack has economic importance, such damages can diminish the productivity of the plantation and compromise the economy of families and the local communities. Although the adverse effects of herbivory on plants and economy are entirely known, some biological mechanisms underlying these damages remain unclear, especially at the anatomical and hormonal levels. The psyllid Triozoida limbata (Hemiptera: Triozidae) is a critical guava (Psidium guajava) pest in the Neotropical region, causing productivity plantation losses up to 55%. Psyllids cause visible morphological changes on guava leaves; however, there is a lack of detailed studied of the cellular, anatomical, and hormonal aspects of the subject. Thus, this work aimed to determine the alterations caused in guava leaves by T. limbata through anatomical and hormonal analyzes. Results: We found that the psyllid's nymphs feeding causes cells hypertrophy and hyperplasia determining the formation of the leaf-roll galls. Although there was no anatomical differentiation of the mesophilic tissues, the cells accumulate starch. Along with the anatomical changes, we observed increasing in the jasmonic acid and reduction of zeatin concentrations in the leaves. Conclusions: The alteration of phytohormone contents and the anatomical changes indicates that the feeding of T. limbata activates plant defenses, but it is not active toward the insects off. The insect nymphs live inside the leaf-roll galls until adults' phase, feeding on the guava leaves xylem and phloem. In commercial guava orchard, the control of T. limbata nymphs have been difficult. Thus, the understanding of the composition of this protective layer can help to find the most effective and efficient control solution for this pest.

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“…It is found commonly in many biodiversity hotspots such as South America, Australia, and tropical Asia, with observed occurrences in Europe and Africa (Grattapaglia et al 2012). However, despite its relevance and diverse representation in wide range of biomes, Myrtaceae is still considered as a taxonomically complex family (McVaugh 1968;Oliveira et al 2017). Speciation brought about by hybridization and polyploidy, and lack of anatomical and morphological studies were attributed to the difficulty of identification and delimitation of species (Oliveira et al 2017) Among generic groups in Myrtaceae, the genus Syzygium is the largest with an estimated species count in the world of up to 1,200 (Parnell et al 2007;Govaerts et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Taxonomic references, such as on morphological characterization of leaves, especially for widely used economic plants as the aforementioned Syzygium species, are important for authentication and ultimate identification. These references allow verification and accurate identification of plant species, eliminating confusion and improper use of a particular species, particularly as medicine or cosmetics, which could have adverse effects to health, ecology, and sustainability of plant resource (Oliveira et al 2017). The aim of this paper is to differentiate the two Syzygium species, S. aqueum and S. samarangense, using leaf characters to contribute to the knowledge of Syzygium taxonomy and aid in the resolution of morphological confusion.…”

Section: Introductionmentioning

confidence: 99%

Short Communication: Leaf architectural analysis of confusing Syzygium species: Syzygium aqueum (Burm.f.) Alston and Syzygium samarangense (Blume) Merr. & L.M.Perry (Myrtaceae)

Viacrucis

Buot

2021

Biodiversitas

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Abstract. Viacrucis III JDL, Buot Jr. IE. 2021. Short Communication: Leaf architectural analysis of confusing Syzygium species: Syzygium aqueum (Burm.f.) Alston and Syzygium samarangense (Blume) Merr. & L.M.Perry (Myrtaceae). Biodiversitas 22: 3341-3348. Among species of Myrtaceae family which has economic and ecological importance are the two Syzygium species, Syzygium aqueum and Syzygium samarangense. Both species are cultivated throughout the tropics because of their edible fruits and medicinal properties of various plant parts. However, despite their wide utilization, the two species are often confusing due to their morphological similarity. In this study, leaf architecture of S. aqueum and S. samarangense have been evaluated to delineate the two confusing taxa. Selected laminal and venation characters were compared. Results showed many similar characters shared between the two species, however, laminar size, apex and base shape, areolation, and freely ending veinlets (FEVs) were found to be distinct. Multivariate analyses, cluster analysis employing Gower similarity index, using unweighted pair-group average (UPGMA) and single linkage (nearest neighbor) algorithm, and ordination using Principal Coordinates Analysis (PCoA), illustrated that they are grouped separately. The variations in laminal and venation characters are additional set of information that will allow accurate differentiation of the two species. However, it is recommended that additional taxonomical analysis using various methods, such as molecular techniques, be employed and characters, such as floral morphology, be studied to contribute in the resolution of the taxonomic complexity of this group and other taxonomic controversies

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Leaf morphology and venation of Psidium species from the Brazilian Savanna

Cited by 17 publications

References 18 publications

Delineation of the selected Cucumis L. species and accessions using leaf architecture characters

Delineation of the selected Cucumis L. species and accessions using leaf architecture characters

The Psyllids Triozoida Limbata Supplant the Defenses of Psidium Guajava Plants to Garentee Feeding and Protection

Short Communication: Leaf architectural analysis of confusing Syzygium species: Syzygium aqueum (Burm.f.) Alston and Syzygium samarangense (Blume) Merr. & L.M.Perry (Myrtaceae)

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