Pseudophacopteron longicaudatum (Hemiptera) induces intralaminar leaf galls on Aspidosperma tomentosum (Apocynaceae): a qualitative and quantitative structural overview



Título del documento: Pseudophacopteron longicaudatum (Hemiptera) induces intralaminar leaf galls on Aspidosperma tomentosum (Apocynaceae): a qualitative and quantitative structural overview
Revista: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000436001
ISSN: 0001-3765
Autores: 1
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2
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Instituciones: 1Universidade Federal de Uberlandia, Instituto de Biologia, Uberlandia, Minas Gerais. Brasil
2Universidade Federal de Goias, Instituto de Ciencias Biologicas, Goiania, Goias. Brasil
Año:
Volumen: 92
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés The structural complexity of galls depends on species-specific interaction driven by the galling taxa. However, the host plant and environment stressors can impose limits on gall developmental patterns and impact the establishment of gall morphology. Herein, we employed qualitative and quantitative approaches in order to elucidate how cell divisions, elongation patterns, and tissue organization are determinant for the development of intralaminar gall morphology induced by Pseudophacopteron longicaudatum Malenovský, Burckhardt, Queiroz, Isaias & Oliveira (Hemiptera: Psylloidea: Phacopteronidae) on leaves of Aspidosperma tomentosum Mart. (Apocynaceae). In addition, we aimed to determine which anatomical process can discriminate the stages of gall development, plus, examine the histochemical and cytological profiles of the galls. The differentiated structures, mainly abaxial epidermis and spongy parenchyma, are associated with gall closure, with hyperplastic events concentrated in the young phase of the galls. Thus, epidermis and spongy parenchyma hypertrophy and are responsible for the determination of the nymphal chamber formation and gall shape. The mature galls do not differentiate into a typical nutritive cells and do not develop a histochemical gradient in their tissues. The cytological features of galls such as plastoglobules and multivesicular bodies are related to ROS scavenging mechanisms due the high oxidative stress
Disciplinas: Biología
Palabras clave: Insectos,
Angiospermas,
Ectoparásitos,
Agallas,
Hojas,
Análisis histológico,
Elongación celular,
Aspidosperma tomentosum,
Apocynaceae,
Pseudophacopteron longicaudatum,
Hemiptera
Keyword: Insects,
Angiosperms,
Ectoparasites,
Galls,
Leaves,
Histological analysis,
Cell elongation,
Aspidosperma tomentosum,
Apocynaceae,
Pseudophacopteron longicaudatum,
Hemiptera
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