Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica
IntroductionHemipteran gall vascular traits result from the access, piercing, and sucking of the inducer mouth parts directly in the xylem and phloem conductive cells. Herein, our focus relies on mapping the features of phloem cells in the proximal, median, and distal regions of Malus pumila stem ga...
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Frontiers Media S.A.
2025-01-01
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| author | Ravena Malheiros Nogueira Gracielle Pimenta Pereira Bragança Edgard Augusto de Toledo Picoli Denis Coelho de Oliveira Rosy Mary dos Santos Isaias |
| author_facet | Ravena Malheiros Nogueira Gracielle Pimenta Pereira Bragança Edgard Augusto de Toledo Picoli Denis Coelho de Oliveira Rosy Mary dos Santos Isaias |
| author_sort | Ravena Malheiros Nogueira |
| collection | DOAJ |
| description | IntroductionHemipteran gall vascular traits result from the access, piercing, and sucking of the inducer mouth parts directly in the xylem and phloem conductive cells. Herein, our focus relies on mapping the features of phloem cells in the proximal, median, and distal regions of Malus pumila stem galls and adjacent galled stems.MethodsPhloem cells were dissociated from gall fragments, the stem portions above and below the galls, and the proximal and distal regions of M. pumila stem galls. were measured. The comparison of the higher length and diameter of the sieve tube elements (STE) was evaluated considering the priority of nutrient flow to gall portions.ResultsIn the M. pumila - E. lanigerum system, there were no significant differences in the dimensions of the STE in the galls compared with those of the stem portions above and below the galls.DiscussionAt the cytological level, the callose deposited in gall STE and the decrease in the cell lumen area in the stem portion above the gall due to thickened nacreous cell walls have implications for nutrient flow. Peculiarly, the smaller sieve pores in the sieve plates of the STE located in the galls and stem portions above and below them and the deposition of P-protein in the stem portions below the galls limit the bidirectional transport of nutrients, benefiting the transport of photoassimilates to the gall proximal region and reducing the vigor of apple tree stems. |
| format | Article |
| id | doaj-art-fe9efd71949347e2b1a3c733058344bd |
| institution | Kabale University |
| issn | 1664-462X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj-art-fe9efd71949347e2b1a3c733058344bd2025-01-30T06:22:34ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-01-011610.3389/fpls.2025.15075521507552Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domesticaRavena Malheiros Nogueira0Gracielle Pimenta Pereira Bragança1Edgard Augusto de Toledo Picoli2Denis Coelho de Oliveira3Rosy Mary dos Santos Isaias4Department of Botany, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, BrazilDepartment of Botany, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, BrazilDepartment of Plant Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, BrazilInstitute of Biology, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, BrazilDepartment of Botany, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, BrazilIntroductionHemipteran gall vascular traits result from the access, piercing, and sucking of the inducer mouth parts directly in the xylem and phloem conductive cells. Herein, our focus relies on mapping the features of phloem cells in the proximal, median, and distal regions of Malus pumila stem galls and adjacent galled stems.MethodsPhloem cells were dissociated from gall fragments, the stem portions above and below the galls, and the proximal and distal regions of M. pumila stem galls. were measured. The comparison of the higher length and diameter of the sieve tube elements (STE) was evaluated considering the priority of nutrient flow to gall portions.ResultsIn the M. pumila - E. lanigerum system, there were no significant differences in the dimensions of the STE in the galls compared with those of the stem portions above and below the galls.DiscussionAt the cytological level, the callose deposited in gall STE and the decrease in the cell lumen area in the stem portion above the gall due to thickened nacreous cell walls have implications for nutrient flow. Peculiarly, the smaller sieve pores in the sieve plates of the STE located in the galls and stem portions above and below them and the deposition of P-protein in the stem portions below the galls limit the bidirectional transport of nutrients, benefiting the transport of photoassimilates to the gall proximal region and reducing the vigor of apple tree stems.https://www.frontiersin.org/articles/10.3389/fpls.2025.1507552/fullaphid gallscytologyplant tumorplant-insect interactionssecondary phloemsieve tube element |
| spellingShingle | Ravena Malheiros Nogueira Gracielle Pimenta Pereira Bragança Edgard Augusto de Toledo Picoli Denis Coelho de Oliveira Rosy Mary dos Santos Isaias Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica Frontiers in Plant Science aphid galls cytology plant tumor plant-insect interactions secondary phloem sieve tube element |
| title | Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica |
| title_full | Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica |
| title_fullStr | Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica |
| title_full_unstemmed | Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica |
| title_short | Phloem cell responses to the feeding activity of Eriosoma lanigerum on Malus domestica |
| title_sort | phloem cell responses to the feeding activity of eriosoma lanigerum on malus domestica |
| topic | aphid galls cytology plant tumor plant-insect interactions secondary phloem sieve tube element |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2025.1507552/full |
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