Influence of AM fungi on the growth and physiological status of Erythrina variegata Linn. grown under different water stress conditions

Manoharan, P. T.; Shanmugaiah, Vellasamy; Balasubramanian, N; Gomathinayagam, S.; Sharma, Mahaveer P.; Muthuchelian, K.

doi:10.1016/j.ejsobi.2010.01.001

Cited by 99 publications

(64 citation statements)

References 33 publications

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“…Moreover, drought stressed AM-plants showed a higher content of soluble proteins in the leaves than drought stressed NM-plants. Similar results have been pointed out by previous reports indicating that AMF might alleviate or decrease RNA disassembly and might enhance the ability of the non-enzymatic antioxidant defense system by means of soluble proteins (Manoharan et al, 2010;Abbaspour et al, 2012).…”

Section: Discussionsupporting

confidence: 78%

Effectiveness of arbuscular mycorrhizal fungi in the protection of olive plants against oxidative stress induced by drought

Fouad

Essahibi

Benhiba

et al. 2014

Span. j. agric. res.

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Olive trees are often subjected to a long dry season with low water availability which induces oxidative stress. The present study was conducted to evaluate the effectiveness of native Rhizophagus manihotis (Rma) and non-native Funneliformis mosseae (Fmo) arbuscular mycorrhizal (AM) fungi (AMF) in enhancing olive protection against oxidative stress induced by water deficit. Olive plantlets, cv. Picholine marocaine, were inoculated (AM-plants) or not (NM-plants) with Rma or Fmo and subjected to well-watered (75% of field capacity) or water-stressed (25% of field capacity) conditions. After two months, obtained results showed that water stress significantly decreased growth and biomass production of NM-plants, but AMF alleviated the detrimental effects of water deficit on the growth of olive plants. Inoculation with Rma increased shoot height by 120%, root length by 56%, fresh weight by 170% (shoot) and 210% (root), and dry weight by 220% (shoot) and 220% (root) compared to NM-plants. AM colonization enhanced drought tolerance in terms of protection against oxidative stress. Mycorrhizal plants showed lower levels of hydrogen peroxide (H2O2), malondialdehyde (MDA) and electrolyte leakage (EL) than NM-plants. Rma colonization decreased two times H2O2, 2.6 times MDA and two times EL levels compared to NM-plants. This protective effect seems to be due to the enhanced activities of superoxide dismutase (534 U mg-1 protein), catalase (298 U mg-1 protein), guaiacol peroxidase (47 U mg-1 protein), and ascorbate peroxidase (305 U mg-1 protein) which were highest in Rma-plants. Moreover, Rma-plants showed the lowest oxidative damage to lipid and highest soluble protein content. Thus, the native AMF Rma ought to be considered as a biological tool for enhancing olive tolerance to drought.

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Section: Discussionsupporting

confidence: 78%

Effectiveness of arbuscular mycorrhizal fungi in the protection of olive plants against oxidative stress induced by drought

Fouad

Essahibi

Benhiba

et al. 2014

Span. j. agric. res.

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“…At the pre-stress measurements S. junceum water relation parameters were not significantly changed by the symbiosis, except for the specific leaf weight (SLW) that was higher for G. intraradices plants, whilst A. cytisoides SLW was higher for plants inoculated with both fungi assayed. Similar results were found for Erythrina variegata (Manoharan et al 2010) confirming that mycorrhization can favour the adaptation to xeric environments. At the end of the drought period the relative water content of plants inoculated with G. intraradices was higher that the RWC of control and of G. mosseae plants.…”

Section: Discussionsupporting

confidence: 91%

Differential effects of two species of arbuscular mycorrhiza on the growth and water relations of Spartium junceum and Anthyllis cytisoides

et al. 2010

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Anthyllis cytisoides and Spartium junceum are two leguminous shrubs native of semiarid mediterranean areas, often used in revegetation strategies. Mycorrhization of both shrubs with Glomus intraradices BEG 72 enhanced both plants growth and water relations under drought stress. Root colonization achieved by Glomus mosseae was lower than the level achieved by G. intraradices in both plants studied, and the effects of the inoculation with G. mosseae BEG 116 were less positive than those observed for G. intraradices. Before the onset of the drought stress period the specific leaf weight (SLW) of S. junceum plants inoculated with G. mosseae was lower than the SLW of control and G. intraradices plants. At the end of the stress period, after 15 days of withholding water, the relative water content of S. junceum twigs was lower for G. mosseae inoculated plants and higher for G. intraradices inoculated plants, compared to control, non-inoculated plants. At the end of the recovery period, 15 days after the reestablishment of watering, there were no differences between inoculation treatments on the parameters related to the plants water status. Anthyllis cytisoides plants inoculated with G. intraradices had lower leaf osmotic potential, more leaves, and higher chlorophyll content (measured as SPAD values). Anthyllis cytisoides plants responded to drought defoliating, but defoliation was lower for the plants inoculated with G. intraradices. At the end of the drought, the leaf osmotic potential was lowest for G. intraradices plants as was the relative water content (RWC) whilst Glomus mosseae inoculated plants had the highest RWC, SLW and osmotic potential values. At the end of the recovery period, all plants recuperated the osmotic potential values measured at the pre-stress period. In our experiments, G. intraradices BEG 72 was found to be superior to G. mosseae BEG 116, this difference could be attributed to the origin of the fungus, native from a Mediterranean area, compared to G. mosseae (BEG116) isolated from the UK.

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“…In contrast, soluble sugar in AM-associated Erythrina variegata (Monoharan et al 2010) and Casuarina equisetifolia (Zhang et al 2010) declined significantly under water deficit conditions. While osmolyte accumulation was usually considered to protect plant cells by osmotic adjustment or by stabilizing membranes and proteins, another role of osmolytes could be to regulate redox or sugar signaling (Hare et al 1998) and osmotic regulation (Roitsch and Gonzalez 2004;Sergeeva et al 2006).…”

Section: Discussionmentioning

confidence: 57%

Arbuscular mycorrhiza improved growth performance in Macadamia tetraphylla L. grown under water deficit stress involves soluble sugar and proline accumulation

et al. 2012

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Water deficit limits plant growth and yield. Arbuscular mycorrhizal (AM) symbiosis is viewed as one of the several methods to improve growth under water deficit. The present study investigated the growth performance in relation to water deficit in two cultivars (''H2'' and ''660'') of AM treated macadamia (Macadamia tetraphylla L.) plants. AM treatment significantly improved the growth in macadamia plants that have been subjected to water deficit (7 % soil water content) for 14 days. Leaf water content (LWC) and maximum quantum yield of PSII (F v /F m ) in AM-associated plants were maintained better than those in the control (well-watered) plants. A positive correlation was observed between LWC and F v /F m in ''H2'' cultivar. AM treatment enhanced proline and soluble sugar content in ''H2'' cultivar under water deficit stress. In contrast, only soluble sugars were accumulated in the AMassociated plants of ''660'' cultivar under water deficit stress. The study concludes that soluble sugars and proline are involved as key signals of osmoregulation defense response, improve water relation in plant tissues, and thereby resulting in improved growth in AM-associated macadamia plants.

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Influence of AM fungi on the growth and physiological status of Erythrina variegata Linn. grown under different water stress conditions

Cited by 99 publications

References 33 publications

Effectiveness of arbuscular mycorrhizal fungi in the protection of olive plants against oxidative stress induced by drought

Effectiveness of arbuscular mycorrhizal fungi in the protection of olive plants against oxidative stress induced by drought

Differential effects of two species of arbuscular mycorrhiza on the growth and water relations of Spartium junceum and Anthyllis cytisoides

Arbuscular mycorrhiza improved growth performance in Macadamia tetraphylla L. grown under water deficit stress involves soluble sugar and proline accumulation

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