Abstract
Endophytic fungi (EPF) and arbuscular mycorrhizal fungi (AMF) symbioses can promote the growth and productivity of several types of plants. This work aimed to investigate the effect of co-inoculation of an EPF Exserohilum rostratum NMS1.5 and an AMF Glomus etunicatum UDCN52867 g.5 on the growth and yields of sunchoke (Helianthus tuberosus L.) compared to the effects of full-dose and half-dose chemical fertilizer (15–15–15) under field conditions. Several plant growth parameters of the co-inoculated plants were significantly higher than the other treatments. Remarkably, such an effect was relatively equal to that of the full-dose chemical fertilizers. Moreover, the co-inoculation of EPF and AMF significantly improved the tuber yield production, even better than the use of a chemical fertilizer. This is the first report to show that plant growth promoting effects of the co-inoculation of EPF and AMF were exceptionally greater than those of the chemical fertilizer. Therefore, our EPF and AMF could potentially be used as a biofertilizer for promoting the growth and yield of sunchoke in the fields.
Highlights
Helianthus tuberosus L. (Jerusalem artichoke or sunchoke) is a native plant to North America, which belongs to the Asteraceae family
This work investigated the potential use of co-inoculation of Endophytic fungi (EPF) strain E. rostratum NMS1.5 and arbuscular mycorrhizal fungi (AMF) strain Gl. etunicatum UDCN52867 g.5 to enhance the growth and yield of sunchoke under field conditions
The use of a single inoculation of either EPF or AMF and the co-inoculation of EPF and AMF could promote sunchoke yield production, which are tuber yield, yield components, harvest index (HI), and tuber inulin contents than those of the plants applied with chemical fertilizer
Summary
Helianthus tuberosus L. (Jerusalem artichoke or sunchoke) is a native plant to North America, which belongs to the Asteraceae family. (Jerusalem artichoke or sunchoke) is a native plant to North America, which belongs to the Asteraceae family. A naturally occurring polysaccharide beneficial to human and animal health [1]. The tubers can be used as raw materials to produce healthy food products, animal feed additives, and bioethanol [2]. Due to its great potential for food and industrial production, sunchoke has been widely cultivated and consumed in Thailand [3]. To promote the growth and yield of sunchoke, farmers usually use chemical fertilizers, which often leads to an accumulation of toxic residues in the area [4]. It is important to find alternative ways to upscale the production of sunchoke without causing harm to the environment
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