Effect of Different Rotation Systems on Production and Quality of Black Morel (Morchella importuna)

Abstract

Morchella importuna is a highly priced edible and medicinal mushroom. Crop rotation is an important management technique to improve soil health. In this study, the morphological characteristics, chemical composition, and nutritional quality of the M. importuna fruitbody under five different rotation systems (named RSA to RSE) were investigated. The results showed that the fruitbodies of M. importuna in rotation system C (RSC, Rice–Pea–M. importuna rotation) grew best (with the highest yield of 6804.90 kg/hm2) and were of higher quality, which showed significant increases in crude protein (37.32 g/100 g) and decreases in crude fat (4.04 g/100 g), crude fiber (10.06 g/100 g), and total ash (9.32 g/100 g). The heavy metal contents (Pb, Cd, and Hg) in the fruitbodies from all rotation systems were rare or none, which meets the standards of the Chinese Green Food Standard and the maximum limit in foodstuffs of the European Union Standard. In addition, the free amino acid compositions of morel under different rotation systems were analyzed. The ratio of essential amino acids to total amino acids (EAA/TAA) was highest in RSC (37.11%). The tested morels were abundant in umami, sweet, aromatic, and medicinal amino acids (UAA, SAA, AAA and MAA). Combining amino acid score, chemical score, and other nutrition indexes, RSC had the best impact on the yield and quality of morel. Our results demonstrate the feasibility and effectiveness of the cultivation model of rotating “Rice–Vegetables–Fungi” for the production of M. importuna in a way that develops high-quality agriculture.

Nutritional value evaluation of wild edible mushroom (Helvella leucopus) from western China

“…Several methods are available to evaluate the nutritional value of edible fungi, including amino acid score (AAS), chemical score (CS), essential amino acid index (EAAI), biological value (BV), and nutrition index (NI) (Bano et al, 1988;Su et al, 2022). The present work comprehensively evaluated and analysed the nutritional value of H. leucopus to enhance the utilisation and protection of this wild mushroom species, and provide a theoretical basis for using this species as a functional food.…”

Isolation and characterization of Plant Growth-Promoting Rhizobacteria from Cenchrus fungigraminus and their potential role in plant growth promotion

“…Nov. ( Pennisetum giganteum Z. X. Lin or Giant grass have been used before) is a new species and perennial C4 plant of the family Gramineae with high yield and arid adaptability (Lin et al 2022). It is collected in South Africa and widely used in environmental management (Zhou et al 2021), production of edible and medicinal mushrooms (Su et al 2022), and as fodder (Liu et al 2018) which produces good economic bene t for rural area. Nowadays, C. fungigraminuss have been grown in 31 provinces in China, including Inner Mongolia, Qinghai, Hainan, Ningxia, Guizhou, Sichuan and Fujian etc., and even 106 countries all over the world .…”