Record ID No. |
1968 |
Author(s) |
Alberdi M., Alvarez M., Valenzuela E., Godoy R., Olivaress E., Barrtentosz M , 2007 |
Affiliation |
Univ La Frontera, Fac Ingn, Dept Ciencias Quim, Casilla 54-D, Temuco, CHILE |
Title |
Response to water deficit of Nothofagus dombeyi plants inoculated with a specific (Descolea antarctica Sing) and non-specific (Pisolithus tinctorious (Pers.) Coker & Couch) ectomycorrhizal fungi |
Source. Vol.(no):Page |
Revista Chilena de Historia Natural.80(4):479-491p. |
Categories |
Ectomycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
CHILE, South America |
Abstracts |
The influence of the specific Descolea antarctica (Da) and the non-specific
Pisolithus tinctorious (Pt) ectomycorrhizal fungi on some physiological leaf parameters of the
Chilean evergreen Nothofagus dombeyi subjected to a low soil water potential (-1.6 to -1.9 MPa in
a growth chamber for 35 days) and a high water potential (-0.07 to -0.09 MPa, control) was
studied. Drought decreased the water status and increased carbohydrates in mycorrhizal and
non-mycorrhizal plants, appearing Da-mycorrhizal and non mycorrhizal plants better osmotically
adjusted (OA= 0.60 MPa and 0.52 MPa, respectively) than Pt-mycorrhizal (0.39 MPa). Proline is not
involved in the OA of mycorrhizal plants. The inoculation of N. Dombeyi with both ectomycorrhizal
fungi favored a better maintenance of the functionality of the photosynthetic apparatus under
drought as indicated by the effective quantum yield (Phi PSII). It is concluded that both
ectomycorrhizal and non-mycorrhizal N. Dombeyi plants responded to water deficit with OA
adjustment, having Da-mycorrhizal plants a greater OA than Pt-mycorrhizal plants. |