| dc.creator | Fajardo, Laurie | |
| dc.creator | Cáceres, Alicia | |
| dc.creator | Arrindell, Pauline | |
| dc.date | 2015-07-01T16:14:05Z | |
| dc.date | 2015-07-01T16:14:05Z | |
| dc.date | 2014 | |
| dc.date.accessioned | 2022-10-28T01:11:55Z | |
| dc.date.available | 2022-10-28T01:11:55Z | |
| dc.identifier | 03345114 | |
| dc.identifier | http://hdl.handle.net/10872/10743 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4944528 | |
| dc.description | A pot experiment was conducted to evaluate the
effects of two arbuscular mycorrhizal fungi (AMF),
Dentiscutata heterogama and Rhizophagus manihotis on the
growth and nutrition of Juglans venezuelensis Manning. This
species is currently considered a threatened tree species and
the successful restoration of its populations depends on an
increased understanding of the ecological and physiological
aspects of its response to inoculation with AMF. In general,
shoot and total dry weight, and leaf area were significantly
higher in seedlings inoculated with AMF than in noninoculated
ones. Differences in height and leaf number between
the inoculated and non-inoculated treatments become
apparent after 30 days of plant growth. Inoculated plants had a
greater leaf area as the result of the higher allocation of
resources to leaf biomass (leaf mass ratio, LMR). The fraction
allocated to the roots (RMR) was not significantly different
between treatments. Differences between vital stain (SDH)
and non-vital trypan blue stain (TB) showed that the
D. heterogama colonization was almost entirely active compared
to the R. manihotis colonization. The relative responsiveness
(RR) of J. venezuelensis to inoculation with
D. heterogama and R. manihotis was 21.8 and 25.4 % respectively,
but colonization values were never greater than 45 %,
despite low P content in the soils used. The growth and
physiological responses of J. venezuelensisto inoculation with
two AMF species indicate that these microorganisms should
be employed when propagating this threatened species for its
subsequence reintroduction into its natural habitat. | |
| dc.language | en | |
| dc.publisher | Symbiosis | |
| dc.relation | 64;2 | |
| dc.subject | Threatened plant species . Habitat destruction . Arbuscular mycorrhizal fungi . Juglans venezuelensis | |
| dc.title | Arbuscular mycorrhizae, a tool to enhance the recovery and re-introduction of Juglans venezuelensis Manning, an endemic tree on the brink of extinction | |
| dc.type | Article | |
