The synthesis of dehydrin-like proteins in 24-month-old Quercus cerris and Q. ilex seedlings subjected to water stress and/or infection with Phytophthora cinnamomi, was investigated. An estimated 50 kDa dehydrin-like protein was observed in leaves of symptomless Q. ilex (drought tolerant) in control, as well as in seedlings infected with P. cinnamomi, throughout the experiment. Water stress, with a midday stem water potential value lower than −2.7 MPa (up to 8 weeks), increased band intensity. Two new polypeptides with a molecular weight of about 60 and 63 kDa, respectively, were detected in Q. ilex, under enhanced water stress conditions (≤−4.0 MPa). No dehydrin-like proteins were observed in leaves of symptomless Q. cerris (drought susceptible) neither in control nor in infected treatments. With a midday stem water potential lower than −3.8 MPa (up to 7 weeks), water stress induced the synthesis of a protein with an approx. molecular weight of 43 kDa, while a band of about 36.5 kDa was detected for both water stress and infection treatments. These results suggest the involvement of dehydrin-like proteins in the response of Q. ilex and Q. cerris seedlings to different stresses
Synthesis of dehydrin-like proteins in Quercus ilex and Quercus cerris seedlings subjected to water stress and infection with Phytophthora cinnamomi / E.TURCO; T.J.CLOSE; R.D.FENTON; A. RAGAZZI. - In: PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY. - ISSN 0885-5765. - STAMPA. - 65:(2004), pp. 137-144.
Synthesis of dehydrin-like proteins in Quercus ilex and Quercus cerris seedlings subjected to water stress and infection with Phytophthora cinnamomi
TURCO, ELENA;RAGAZZI, ALESSANDRO
2004
Abstract
The synthesis of dehydrin-like proteins in 24-month-old Quercus cerris and Q. ilex seedlings subjected to water stress and/or infection with Phytophthora cinnamomi, was investigated. An estimated 50 kDa dehydrin-like protein was observed in leaves of symptomless Q. ilex (drought tolerant) in control, as well as in seedlings infected with P. cinnamomi, throughout the experiment. Water stress, with a midday stem water potential value lower than −2.7 MPa (up to 8 weeks), increased band intensity. Two new polypeptides with a molecular weight of about 60 and 63 kDa, respectively, were detected in Q. ilex, under enhanced water stress conditions (≤−4.0 MPa). No dehydrin-like proteins were observed in leaves of symptomless Q. cerris (drought susceptible) neither in control nor in infected treatments. With a midday stem water potential lower than −3.8 MPa (up to 7 weeks), water stress induced the synthesis of a protein with an approx. molecular weight of 43 kDa, while a band of about 36.5 kDa was detected for both water stress and infection treatments. These results suggest the involvement of dehydrin-like proteins in the response of Q. ilex and Q. cerris seedlings to different stressesFile | Dimensione | Formato | |
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