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Abiotic and Biotic Stresses Interaction in Fabaceae Plants. Contributions from the Grain Legumes/Soilborne Vascular Diseases/Drought Stress Triangle

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The Plant Family Fabaceae

Abstract

As sessile organisms, plants are constantly exposed to simultaneously abiotic and biotic stresses that impact growth thus resulting in significant yield losses. An example is drought and root infecting pathogens, which combined cause greater damage to plants than the stresses individually. Substantial information is available on the physiological, molecular, and metabolic changes in Fabaceae plants exposed to individual stresses, but little is known about how plants respond to multiple stresses. This is of primary importance for the development of breeding approaches based on the trade-off between plant defense response mechanisms, and high and consistent yield under field conditions. A better knowledge of the mechanisms by which legume plants perceive and transduce simultaneous or sequential combination of stress signals to initiate diverse adaptive responses is essential for breeding multiple stress-tolerant crop cultivars. In this chapter, we assess the relevance of understanding legume combined responses to abiotic and biotic stresses for production and breeding, focusing on soilborne vascular diseases and drought interaction in grain legumes. Particular attention is given to the crosstalk between signaling pathways of the “stress triangle” pathogen/host/environment interactions and to the application of integrated breeding methods aiming at multiple stress-resistant legume crops better adapted to climate change.

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Acknowledgements

Financial support by Fundação para a Ciência e Tecnologia (FCT), Portugal, is acknowledged through grant SFRH/BD/92160/2013 (STL), DL57 PhD holder contract (SA), IF/01337/2014 FCT Investigator contract (MCVP), research project BeGeQA (PTDC/AGR-TEC/3555/2012) and research unit GREEN-IT “Bioresources for Sustainability” (UID/Multi/04551/2019).

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Correspondence to Maria Carlota Vaz Patto .

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Leitão, S.T., Araújo, S., Rubiales, D., Vaz Patto, M.C. (2020). Abiotic and Biotic Stresses Interaction in Fabaceae Plants. Contributions from the Grain Legumes/Soilborne Vascular Diseases/Drought Stress Triangle. In: Hasanuzzaman, M., Araújo, S., Gill, S. (eds) The Plant Family Fabaceae. Springer, Singapore. https://doi.org/10.1007/978-981-15-4752-2_9

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