Enhancement of salt tolerance via glomus geosporum inoculation in Telfairia occidentalis Hook. F. seedlings

• Autorzy: Okon O.G. , Eneh G.D.O. , Uboh G.D. , Uyon P.P.
• Języki publikacji: EN

Abstrakty

EN

The leafy vegetable Telfairia occidentalis is a tropical vine grown in West Africa; it is indigenous to Southern Nigeria and is usually subjected to extreme salt stress in Southern Nigeria as well as in the world that results in significant loss of T. occidentalis production. Therefore, the present investigation was aimed at evaluating the response of T. occidentalis seedlings inoculated with arbuscular mycorrhizal fungi (Glomus geosporum) in saline soil and further to determine the threshold of T. occidentalis salinity tolerance in association with G. geosporum. The total photosynthetic pigments contents in saline soil treatment were significantly (p=0.05) reduced as well as percentage arbuscular mycorrhizal fungi colonization (53.97 to 22.41%). Mycorrhizal dependency was significantly (p=0.05) higher in saline soil treatments compared to control (100.00% to 15.13%). Mineral analysis of T. occidentalis leaves revealed increased uptake and accumulation of Na⁺ (500.00 mg/kg in control to 2920.13 mg/kg in saline soil treatment). Saline soil treatments significantly (p=0.05) reduced the K, Mg, N, P and Ca. AM Fungi significantly (p=0.05) increased the photosynthetic pigments and minerals both in saline and non-saline soil treatments. Using different mechanisms T. occidentalis by association with G. geosporum showed better salt tolerance thank the uninoculated plants. G. geosporum was able to impose some physiological and root morphological changes such as an extensive network of the mycorrhizal-plant roots to improve water and mineral nutrient uptake. Physiologically G. geosporum inoculation enriched T. occidentalis vigour, attuned the rate of K⁺/Na⁺ which restored nutrient and water balance in the plant and directly resulting in the enhancement of salt tolerance in T. occidentalis seedlings, thus improving growth and yield.

Słowa kluczowe

EN

Nigeria; Cucurbitaceae; Telfairia occidentalis; inoculation; Glomeraceae; Glomus geosporum; Mycorrhiza; salinity; salty soil; salt tolerance; salinity tolerance; abiotic stress

• Wydawca: -
• Czasopismo: International Letters of Natural Sciences
• Rocznik: 2019
• Tom: 76
• Opis fizyczny: p.13-22,fig.,ref.

Twórcy

autor

Okon O.G.

• Department of Botany, Akwa Ibom State University, Ikot Akpaden, Nigeria

autor

Eneh G.D.O.

autor

Uboh G.D.

• Department of Science Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Nigeria

autor

Uyon P.P.

• Department of Biological Sciences, Ritman University, Ikot Ekpene, Nigeria

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Identyfikatory

DOI

10.18052/www.scipress.com/ILNS.76.13