Drought-induced reductions in plant defenses

Talita Câmara, Daniela Queiroz De Assis Reis, Xavier Arnan, Fernanda Maria Pereira De Oliveira, Emilia Cristina Pereira De Arruda & Inara Roberta Leal
Extrafloral nectaries (EFNs) are anti-herbivory defense-related glands. We measured morphological and anatomical EFN traits in Pityrocarpa moniliformis trees along a rainfall gradient in Caatinga dry forest. We observed a reduction in structural EFN traits as rainfall decreased. We conclude that this reduction is a cost-saving strategy, probably mediated by ants.
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