Plant-Mediated Effects of Water Deficit on the Performance of Tetranychus evansi on Tomato Drought-Adapted Accessions
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Other documents of the author: Ximénez-Embún, Miguel G.; González-Guzmán, Miguel; Arbona, Vicent; Gomez-Cadenas, Aurelio; Ortego, Félix; Castañera, Pedro
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Title
Plant-Mediated Effects of Water Deficit on the Performance of Tetranychus evansi on Tomato Drought-Adapted AccessionsAuthor (s)
Date
2018-10Publisher
Frontiers MediaBibliographic citation
XIMÉNEZ-EMBÚN, Miguel G.; GONZÁLEZ-GUZMÁN, Miguel; ARBONA MENGUAL, Vicent; GÓMEZ CADENAS, Aurelio; ORTEGO, Félix; CASTAÑERA, Pedro (2018). Plant-Mediated Effects of Water Deficit on the Performance of Tetranychus evansi on Tomato Drought-Adapted Accessions. Frontiers in Plant Science, v. 9Type
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Abstract
Climate change is expected to increase drought periods and the performance and
dispersal of some invasive species such as Tetranychus evansi, which has been
reported to take advantage of the nutritional changes ... [+]
Climate change is expected to increase drought periods and the performance and
dispersal of some invasive species such as Tetranychus evansi, which has been
reported to take advantage of the nutritional changes induced by water-shortage on the
tomato cultivar Moneymaker (MM). We have examined the implications for mite’s biology
of four accessions of the drought-adapted tomatoes, “Tomàtiga de Ramellet” (TR),
under moderate drought stress. Mite performance was enhanced by drought in two
accessions (TR61 and TR154), but not in the other two accessions (TR58 and TR126).
We selected one accession of each outcome (i.e., TR154 and TR126) to further analyze
plant nutritional parameters. We found that free sugars and most essential amino acids
for mites were induced by drought and/or mite infestation on MM and TR154 plants,
whereas sugars were not altered and a reduced number of essential amino acids were
induced by drought in TR126. Remarkably, mite performance was enhanced by leaf
infiltration of free sugars, essential amino acids mixture, and L-proline on well-watered
MM and by free sugars on drought-stressed TR126 plants. These results indicate a
positive link between the induction of soluble carbohydrates and amino acids used
by the plant for osmotic adjustment and mite performance. The effects of drought
and/or mite infestation on the defense response of plants was analyzed at three levels:
phytohormone accumulation, the transcript levels of marker genes linked to jasmonates
(JAs), salicylic acid (SA), and abscisic acid (ABA) pathways, and the activity of defense
proteins. The ability of T. evansi to downregulate the accumulation of defense-related
phytohormones was noted on MM and the two TR accessions analyzed (TR126 and
TR154), though differences in the induction of protein defense genes and activities by
drought and/or mite infestation were observed among them. These results emphasize
the importance of studying plant biotic and abiotic stress factors in combination and
provides an experimental framework for screening drought-tolerant tomato accessions
that will be also resistant to herbivore mites. [-]
Is part of
Frontiers in Plant Science (2018), v. 9Investigation project
1) Grant from INIA (GENOMITE, Proposal No. 618105 FACCE Era Net Plus-Food security, Agriculture, Climate Change) to PC and FO; 2) By Ministerio de Economía y Competitividad (MINECO), Fondo Europeo de Desarrollo Regional (FEDER) and Universitat Jaume I through grants nos. AGL201676574-R and UJI-B2016- 23/UJI-B2016-24; 3) JAE-predoc fellowship from the CSIC. MG-G was supported by a Young Investigator project from Spanish government and cofounder with FEDER founds (AGL2015- 73235-JIN)Rights
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