Water Deficiency and Induced Defense Against a Generalist Insect Herbivore in Desert and Mediterranean Populations of Eruca sativa

Ogran, Ariel; Wasserstrom, Haggai; Barzilai, Michal; Faraj, Tomer; Dai, Nir; Carmi, Nir; Barazani, Oz

doi:10.1007/s10886-021-01292-9

Cited by 4 publications

(7 citation statements)

References 57 publications

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“…In addition, an on-going investigation suggests that differences between floral attraction traits, i.e., petal color and scent (Barazani et al, 2019), might have evolved as a response to different pollinators. Thus, our results support the assumption that local adaptions mirror signatures of combined abiotic and biotic conditions (Ogran et al, 2021).…”

Section: Genomic Differentiation In Loci Linked To Induced Defense Ag...supporting

confidence: 87%

“…Accordingly, it can be concluded that the results of this study support the assumption that the release of simple nitriles in AR defends the plants from the specialist P. xylostella (Ogran et al, 2016). Moreover, we have previously shown that differences between populations in response to herbivory include higher expression of trypsin and KUNITZ proteinase inhibitors in AR than MR plants (Ogran et al, 2016(Ogran et al, , 2021. Thus, the nonsynonymous allelic differentiation in KTI1 (Table 4) suggest a role of proteinase inhibitors as counter adaption to the specialist herbivore (Travers-Martin and Muller, 2008) in the AR plants.…”

Section: Genomic Differentiation In Loci Linked To Induced Defense Ag...supporting

confidence: 83%

“…In addition, both the AF-F ST and EVA analyses categorized the annotated genomic regions with biotic interaction (Figure 2). Similar studies that assessed genomic divergence between populations of A. hallerii (Fischer et al, 2013;Kubota et al, 2015) and Arabis alpina (Lobreaux and Miquel, 2020) be assessed regarding abiotic (Westberg et al, 2013;Ogran et al, 2021) and biotic conditions (Ogran et al, 2020).…”

Section: Genetic Divergence and Signatures Of Selectionmentioning

confidence: 96%

“…ABA is the major key phytohormone playing a role in the regulation of plant response to abiotic stresses (Nakashima et al, 2014;Clauw et al, 2015), mainly by inducing stomatal closure under water stress and regulating stress-related responses (Sreenivasulu et al, 2012). Transcriptional changes in plants of E. sativa that were exposed to water deficiency included significant induction in the expression of ABA1 in AR plants, as compared to control and drought-exposed MR plants (Ogran et al, 2021). Here, we show that genomic differentiation between the two regions includes SNP mutations in regulatory elements of ABA metabolism and signaling pathways (Table 3).…”

Section: Evidence Of Local Adaptationmentioning

confidence: 99%

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Whole genome sequencing reveals footprints of adaptive genetic variation in populations of Eruca sativa

et al. 2022

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Populations of Eruca sativa (Brassicaceae) derived from arid and Mediterranean habitats exhibit ecotypic differentiation. Here, pooled DNA sequencing was used to assess adaptive genome differentiation in the two ecotypes. Differentiated SNP loci were scanned with the empirical FST outlier method and by correlating allele frequencies with environmental parameters. Genetic diversity values were relatively higher in the pooled arid genome, whereas the pooled Mediterranean genome exhibited stronger directional selection, indicating the impact of climatic conditions on genetic diversity. GO enrichment analysis categorized the annotated differentiated loci according to biological processes, revealing a large set of candidate genes related to abiotic and biotic stress responses. Allelic variation was detected in regulatory elements and coding regions (synonymous and non-synonymous mutations) of genes belonging to different transcription factors and phytohormone signaling, suggesting adaptation to both abiotic and biotic conditions. Furthermore, SNP mutations were also found in genic regions belonging to the synthesis of secondary metabolites, including aliphatic glucosinolates and their hydrolyzed bioactive compounds, among others. The results of this eco-genomic study demonstrate the role of divergent abiotic and biotic selection factors in evolutionary processes leading to adaptive ecotypic differentiation.

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Section: Genomic Differentiation In Loci Linked To Induced Defense Ag...supporting

confidence: 87%

Section: Genomic Differentiation In Loci Linked To Induced Defense Ag...supporting

confidence: 83%

Section: Genetic Divergence and Signatures Of Selectionmentioning

confidence: 96%

Section: Evidence Of Local Adaptationmentioning

confidence: 99%

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Whole genome sequencing reveals footprints of adaptive genetic variation in populations of Eruca sativa

et al. 2022

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“…Furthermore, MJ treatment delayed bolting and flowering time, and scape elongation in the desert ecotype, suggesting that defense factors other than glucosinolates and trichomes might be induced in response to mimicked herbivory. Previous results indicated the important role of protease inhibitors in defense against herbivores in plants of the desert ecotype of E. sativa (Ogran et al, 2016;Ogran et al, 2021). Inducible expression of trypsin-proteinase inhibitor was shown to constrain herbivory and delay flowering in Nicotiana attenuata (Solanaceae) (Glawe et al, 2003; Except for flowering date, elicitation of defenses by MJ did not impose costs on fitness-related important traits, i.e.…”

Section: Discussionmentioning

confidence: 91%

Testing the costs of defense against herbivores in ecotypes of Eruca sativa (Brassicaceae)

Barazani

2023

Israel J. Plant Sci.

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Plants of Eruca sativa from a desert population produce less vegetative biomass, flower earlier and possess higher density of trichomes than plants from a more mesic Mediterranean habitat. When eliciting plant defense mechanisms with methyl-jasmonate (MJ), trichome formation was exclusively enhanced in plants of the Mediterranean ecotype. To test the relative costs of defenses, ecologically-important traits were monitored in non-elicited plants of the two ecotypes and when defenses were induced by MJ. Opposing the expected tradeoffs of induced defense, MJ- elicitation significantly delayed bolting and flowering in plants of the desert ecotype but not in the Mediterranean ones. Moreover, MJ did not impose costs on fitness- related traits, i.e. fruit and seed production, nor differences between plants of the two ecotypes were found. It is suggested that early flowering in plants of the desert ecotype provide a mean to escape both the abiotic stressful environment as well herbivory, while induced defense in the Mediterranean ecotype was favored in habitats of more stressful biotic interactions. The results are discussed in light of the optimal defense theory and resource availability hypothesis.

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Multifactorial stress combination, plant microbiome recruitment, and reactive oxygen species/antioxidant feedbacks for plant stress alleviation

Beltrán-García,

Martínez-Rodríguez,

Beltran-García

et al. 2024

Sustainable Agricultural Practices

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Water Deficiency and Induced Defense Against a Generalist Insect Herbivore in Desert and Mediterranean Populations of Eruca sativa

Cited by 4 publications

References 57 publications

Whole genome sequencing reveals footprints of adaptive genetic variation in populations of Eruca sativa

Whole genome sequencing reveals footprints of adaptive genetic variation in populations of Eruca sativa

Testing the costs of defense against herbivores in ecotypes of Eruca sativa (Brassicaceae)

Multifactorial stress combination, plant microbiome recruitment, and reactive oxygen species/antioxidant feedbacks for plant stress alleviation

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