Phenylalanine ammonia lyase activity in chilli CM-334 infected by Phytophthora capsici and Nacobbus aberrans |
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| Authors: | Damaris Godinez-Vidal Mario Rocha-Sosa Edgar B Sepúlveda-García Joel Lara-Reyna Reyna Rojas-Martínez Emma Zavaleta-Mejía |
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| Institution: | (1) Fitopatología-Colegio de Postgraduados, Montecillo, CP 56230, Mexico;(2) Instituto de Biotecnología-UNAM, Cuernavaca, Morelos, 62210, Mexico |
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| Abstract: | We tested the hypothesis that PAL activity in chilli plants CM-334 inoculated with Nacobbus aberrans (Na) alone or in combination with Phytophthora capsici (Pc), is lower than in those inoculated only with Pc. At 21 days after nematode inoculation, inoculated plants showed a significant
(P < 0.01) reduction of 48% in PAL activity compared to those non-inoculated in two separate experiments. In two other tests,
where plants were inoculated with the oomycete 21 days after inoculation with the nematode, PAL activity at 2, 4, 6, 8 and
24 h after inoculation with Pc was significantly higher (Tukey, P < 0.01) in plants inoculated only with Pc than in plants inoculated only with Na or both pathogens (Na+Pc). |
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| Keywords: | Breaking of resistance Oomycetes Sedentary plant parasitic nematodes |
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