Abstract
Dominant halophytes, such as Plantago maritima, Aster tripolium, Artemisia santonicum, Puccinellia limosa, Festuca pseudovina and Lepidium crassifolium were monitored for their colonization by arbuscular mycorrhizal fungi (AMF) for two vegetation periods, sampled by monthly frequency. Two saline sites (A: Apaj-puszta and Z: Zabszék) were selected for the survey due to their similar physical and chemical soil characteristics (including the salt level and salt specific anions) and the distinct site use (pasturing or not) or water regime (as drought or temporally flooded at the vicinity of the Zabszék lake). Colonization of arbuscular mycorrhizal fungi greatly depended on the plant species and their physiological status, such as the mycotroph or non-mycotroph character. In this respect the highest mycorrhizal intensity (M%) and arbusculum richness (A%) was found on the Plantago maritima , while Puccinellia limosa was the less dependent species on mycorrhiza fungi. A characteristic seasonal dynamism was found at both saline sites, for all sampled halophytes. A maximum mycorrhizal colonization was recorded in late spring and early summer, when there was an increased plant-physiological initiative for the helpful symbiosis (i.e. intensive vegetative and/or generative phases of the hosts). The rate of fungal intensity in the root system (M%), and especially the arbusculum richness (A%) on the other hand was found to be dependent on the site use and the water fluctuation in the soils. A more versatile dynamism of the mycorrhizal colonization was found therefore at the vicinity of the Zabszek lake with the permanent water fluctuations. Under more drought stressed conditions an increased mycorrhizal colonization and functioning (arbusculum richness) was found, generally preceeding the high environmental stress, which was deleterious for both symbiont partners. Such mycorrhizal dynamism in the rhizosphere, however, seems to be a common strategy between the hosts and the microsymbionts in the “struggle for life” process in the Hungarian steppe.
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Claims 9
Claim · model-written summary
AMF colonization depended strongly on plant species and physiological status.
- Taxon
- plant speciese0
- Interactor
- arbuscular mycorrhizal fungie0symbiont
- Outcome
- Colonization of arbuscular mycorrhizal fungie0
- Qualifier
- physiological statuse0
Not reportedDirection
Verbatim
e0“Colonization of arbuscular mycorrhizal fungi greatly depended on the plant species and their physiological status”
Claim · model-written summary
Plantago maritima had the highest mycorrhizal intensity and arbusculum richness.
- Taxon
- Plantago maritima
Plantago maritimae0 - Outcome
- mycorrhizal intensity (M%) and arbusculum richness (A%)e0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest mycorrhizal intensity (M%) and arbusculum richness (A%) was found on the Plantago maritima”
t0“Mycorrhizal”
Claim · model-written summary
Puccinellia limosa was least dependent on mycorrhizal fungi.
Verbatim
e0“Puccinellia limosa was the less dependent species on mycorrhiza fungi”
Claim · model-written summary
AMF colonization varied seasonally at both saline sites for all sampled halophytes.
Verbatim
e0“A characteristic seasonal dynamism was found at both saline sites, for all sampled halophytes.”
Claim · model-written summary
Mycorrhizal colonization peaked in late spring and early summer.
Verbatim
e0“A maximum mycorrhizal colonization was recorded in late spring and early summer”
t0“Halophytes”
Claim · model-written summary
Root fungal intensity depended on site use and soil water fluctuations.
- Taxon
- Halophytest0
- Outcome
- rate of fungal intensity in the root system (M%)e0
- Setting
- site use and the water fluctuation in the soilse0
Not reportedDirection
Verbatim
e0“The rate of fungal intensity in the root system (M%), and especially the arbusculum richness (A%) on the other hand was found to be dependent on the site use and the water fluctuation in the soils.”
t0“Halophytes”
Claim · model-written summary
Arbusculum richness depended on site use and soil water fluctuations.
- Taxon
- Halophytest0
- Outcome
- arbusculum richness (A%)e0
- Setting
- site use and the water fluctuation in the soilse0
Not reportedDirection
Verbatim
e0“the arbusculum richness (A%) on the other hand was found to be dependent on the site use and the water fluctuation in the soils.”
t0“Halophytes”
Claim · model-written summary
Mycorrhizal colonization dynamics were more variable near Zabszek lake.
Verbatim
e0“A more versatile dynamism of the mycorrhizal colonization was found therefore at the vicinity of the Zabszek lake with the permanent water fluctuations.”
t0“Halophytes”
Claim · model-written summary
Drought stress was associated with greater mycorrhizal colonization and arbusculum richness.
Verbatim
e0“Under more drought stressed conditions an increased mycorrhizal colonization and functioning (arbusculum richness) was found”
t0“Halophytes”