Plant Productions

Influence of three species of Arbuscular Mycorrhizal Fungi on growth and nutrients uptake in zinnia plant under drought stress conditions

Vahed Bagheri; Mohammad Hossein Shamshiri; Hossein Alaei; Hassan Salehi

Volume 41, Issue 4 , March 2019, , Pages 83-96

https://doi.org/10.22055/ppd.2018.23285.1513

Abstract

Abstract Background and Objectives Drought is one of the major environmental constraints that limit plant growth and productivity more than any other environmental factor. Drought ... Read More Abstract Background and Objectives Drought is one of the major environmental constraints that limit plant growth and productivity more than any other environmental factor. Drought stress reduces normal growth, disturbs water relations and nutrition uptake in plants. Arbuscular mycorrhizal fungi (AMF) can increase plant tolerance to drought via direct water uptake and transport through fungal hyphae to the host plants, enhance nutrient uptake, improve osmotic adjustment and antioxidant activity. This study was conducted to evaluate the influence of three AMF species (singly or in combination) on DS alleviation of zinnia seedlings (as a potentially drought-tolerant ﬂower crop) grown under different DS levels. Materials and Methods To study the effects of three identified isolates of arbuscular mycorrhizal fungi (AMF) on growth and elements concentration (P, K, Fe, Zn, Cu and Mn) of zinnia plants (Zinnia elegans L. var. Magellan Red) under drought stress condition, a greenhouse experiment was conducted with two factors including mycorrhiza at five levels (no mycorrhizae as control, Rhizophagus irregularis, Rhizophagus intraradisces, Funneliformis mosseae, Mix ) and four levels of drought stress (100% FC as control, 80% FC, 60% FC and 40% FC) with six replicates based on a completely randomized design (CRD). Seedlings with four true leaves were transplanted into 1 L pot and immediately inoculated with 210 spores per pot of the each of above symbionts. Control plants received the same amount of autoclaved inocula. The plants were irrigated with distilled water for 50 days to obtain certain amount of infection; then four irrigation regimes were achieved for four weeks. Results According to the results, vegetative growth traits like fresh and dry weight of shoot, root and flower leaf area and flower diameter were reduced significantly with increasing drought stress levels. Drought stress reduced uptake and transport of elements. The utilized AMF improved growth and nutrients uptake under drought stress considerably in 40% FC where R. irregularis, R. intraradisces, F. mosseae and mix increased dry weight of shoot by 20, 22, 20, 11 percent respectively in comparison with control. Discussion In conclusion, it is suggested that AMF inoculation improves drought tolerance of zinnia plants at least in part through the enhanced uptake of slowly diffusing mineral ions such as PO42- and Zn2+. Moreover, arbuscular mycorrhizal colonization provides better osmotic adjustment which can be correlated with K+ accumulation in top portions of inoculated plants. The results of this study showed that zinnia plants exhibited a better symbiotic relation with three identified isolates of arbuscular mycorrhizal fungi especially with mixed treatment.

The Role of Covering and Antitranspirant substances on Control of Date Bunch Fading in Mazafati Cultivar

A. Shoorabadi; M.H. Shamshiri; M. najafinia; S.H. Mirdehghan

Volume 39, Issue 1 , June 2016, , Pages 47-64

https://doi.org/10.22055/ppd.2016.12041

Abstract

Background and Objectives The phenomenon of date-bunch fading is one of the most important problems of some Iranian date producers. This disorder causes fruit shrinkage at the stage ... Read More

Effect of arbuscular mycorrhizae and salicylic acid on nutrient elements content of abareqi pistachio seedling under drought stress

M.H Shamshiri; M.R. Hasani; H.R. Karimi; M. Esmaail Zadeh

Volume 38, Issue 1 , May 2015, , Pages 75-89

https://doi.org/10.22055/ppd.2015.11133

Abstract

To investigate the combined effects of arbuscular mycorrhizae fungus and salicylic acid on nutrient uptake and distribution of Abareqi Pistachio seedlings under drought stress, an experiment ... Read More

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Author = Mohammad Hossein Shamshiri

Influence of three species of Arbuscular Mycorrhizal Fungi on growth and nutrients uptake in zinnia plant under drought stress conditions

Abstract

The Role of Covering and Antitranspirant substances on Control of Date Bunch Fading in Mazafati Cultivar

Abstract

Effect of arbuscular mycorrhizae and salicylic acid on nutrient elements content of abareqi pistachio seedling under drought stress

Abstract