NDLI: Lignification, phenols accumulation, induction of PR proteins and antioxidant-related enzymes are key factors in the resistance of Olea europaea to Verticillium wilt of olive

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Lignification, phenols accumulation, induction of PR proteins and antioxidant-related enzymes are key factors in the resistance of Olea europaea to Verticillium wilt of olive

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Acta Physiologiae Plantarum : Volume 39, Issue 1, January 2017

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Lignification, phenols accumulation, induction of PR proteins and antioxidant-related enzymes are key factors in the resistance of Olea europaea to Verticillium wilt of olive

Content Provider	Springer Nature Link
Author	Gharbi, Yaakoub Barkallah, Mohamed Bouazizi, Emna Hibar, Khaled Gdoura, Radhouane Triki, Mohamed Ali
Copyright Year	2017
Abstract	To determine whether differences in olive susceptibility to Verticillium dahliae are accompanied by differential biochemical and physiological defense responses, we monitored the changes in fungal DNA concentration, membrane conductivity, total polyphenols, orthodihydroxyphenols, lignin and defense-related enzymes in the stems and roots of two olive cultivars differing by their susceptibility to V. dahliae. Fungal DNA was detected in the roots at 4 dai and attains a pick of 3.614 and 2.475 ng/100 ng of total DNA, respectively, in the susceptible and resistant cultivars. V. dahliae DNA in the stems was detected from 15 dai and raised slowly to attain a pick of 0.231 ng/100 ng of total DNA in the susceptible cultivar. Correlation tests between the biochemical and physiological parameters revealed that high membrane conductivity, together with early activation of peroxidase (POX) and polyphenol oxidase (PPO), resulted in a reduced root rot and wilt symptoms in the resistant cultivar Sayali when compared to the susceptible cultivar Chemlali. Monitoring of chitinase and β-1,3-glucanase genes’ expression levels indicates that early and simultaneous upregulation of both genes is correlated with reduced susceptibility in the resistant cultivar Sayali. Correlation tests performed between the different studied parameters, revealed a clear association between, POX activity and lignin content (r = 0.873), polyphenols and lignin contents (r = 0.886), PPO activity and OD phenols content (0.795), chitinase and β-1,3-glucanase activities (0.878) in the resistant cultivar Sayali. By contrast, lower correlation coefficients were obtained for the susceptible cultivar Chemlali. Overall, this study provides new insights into the improvement of olive genetic resources.
Starting Page	1
Ending Page	15
Page Count	15
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	39
Issue Number	2
e-ISSN	18611664
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-01-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Membrane conductivity Pathogenesis-related proteins Cultivar susceptibility Root resistance OD-phenols Soluble lignin Peroxidase Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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Transcriptome analysis of wild olive (Olea Europaea L. subsp. europaea var. sylvestris) clone AC18 provides insight into the role of lignin as a constitutive defense mechanism underlying resistance to Verticillium wilt

Systemic responses in a tolerant olive (Olea europaea L.) cultivar upon root colonization by the vascular pathogen Verticillium dahliae

Unveiling Differences in Root Defense Mechanisms Between Tolerant and Susceptible Olive Cultivars to Verticillium dahliae

Metatranscriptomic dynamics after Verticillium dahliae infection and root damage in Olea europaea

Wild Olive Genotypes as a Valuable Source of Resistance to Defoliating Verticillium dahliae

Plant Biostimulants: New Insights Into the Biological Control of Verticillium Wilt of Olive

Screening for resistance of Turkish olive cultivars and clonal rootstocks to Verticillium wilt

Identifying resistance to Verticillium wilt in local Spanish olive cultivars

Microbial communities associated with the root system of wild olives (Olea europaea L. subsp. europaea var. sylvestris) are good reservoirs of bacteria with antagonistic potential against Verticillium dahliae

Lignification, phenols accumulation, induction of PR proteins and antioxidant-related enzymes are key factors in the resistance of Olea europaea to Verticillium wilt of olive

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Transcriptome analysis of wild olive (Olea Europaea L. subsp. europaea var. sylvestris) clone AC18 provides insight into the role of lignin as a constitutive defense mechanism underlying resistance to Verticillium wilt

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Microbial communities associated with the root system of wild olives (Olea europaea L. subsp. europaea var. sylvestris) are good reservoirs of bacteria with antagonistic potential against Verticillium dahliae

Lignification, phenols accumulation, induction of PR proteins and antioxidant-related enzymes are key factors in the resistance of Olea europaea to Verticillium wilt of olive