Complementary effects of biochar, secondary metabolites, and bacteria biocontrol agents rejuvenate ratoon sugarcane traits and stimulate soil fertility

被引：12

作者：

Fallah, Nyumah ^{[1
,2
]}

Pang, Ziqin ^{[1
,2
]}

Zhang, Caifang ^{[1
]}

Tayyab, Muhammad ^{[1
,2
]}

Yang, Ziqi ^{[1
]}

Lin, Zhaoli ^{[1
]}

Lin, Wenxiong ^{[2
]}

Ishimwe, Captoline ^{[3
,4
]}

Ntambo, Mbuya Sylvain ^{[5
]}

Zhang, Hua ^{[1
]}

机构：

[1] Fujian Agr & Forestry Univ, Key Lab Sugarcane Biol & Genet Breeding, Minist Agr, Fuzhou 350002, Peoples R China

[2] Fujian Agr & Forestry Univ, Coll Life Sci, Fujian Prov Key Lab Agroecol Proc & Safety Monitor, Fuzhou 350002, Peoples R China

[3] Fujian Agr & Forestry Univ, Minist Educ Genet Breeding & Multiple Utilizat Cro, Fujian Key Lab Crop Breeding Design, Key Lab, Fuzhou 350002, Peoples R China

[4] Fujian Agr & Forestry Univ, Minist Agr & Rural Affairs Jute & Kenaf Southeast, Expt Stn, Fujian Publ Platform Germplasm Resources Bast Fibe, Fuzhou 350002, Peoples R China

[5] Univ Lubumbashi, Fac Sci Agron, Dept Prod Vegetale, Lab Rech Biofortificat Def & Valorisat Cultures Bi, Lubumbashi 7010, DEM REP CONGO

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2023年 / 202卷

关键词：

Secondary metabolites; Bacteria biocontrol agents; Ratoon sugarcane; Biochar amendment; Soil fertility; PLANT; COMMUNITY; DIVERSITY;

D O I：

10.1016/j.indcrop.2023.117081

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Bacteria biological control agents (BCAs) against diseases and pests are widely deemed a sustainable approach in agriculture. However, the extent to which the multifunctionality of plant secondary metabolites and BC in-teractions shape soil chemistry (e.g., C and N cycling enzymes) and BCAs communities in complex environments, especially under a cropping system (e.g., ratooning) prone to nutrient depletion, disease, etc., is not well established. Besides, the role metabolites-BCAs-BC interactions play in rejuvenating growth conditions necessary for ratoon sugarcane and suppressing plant pathogens/soil-borne diseases remains unclear. Here, we leveraged high-throughput sequencing and LC-MS/MS analyses to illuminate the regulatory effects of BC and plant sec-ondary metabolites interactions on soil chemistry and BCAs communities. Additionally, we explored the roles metabolites-BCAs-BC interactions play in rejuvenating growth conditions necessary for ratoon sugarcane and suppressing plant pathogens/soil-borne diseases. Our finding revealed a pronounced rejuvenation of sugarcane ratoon traits and edaphic factors under the BC amendment soil, primarily due to the role metabolites-BCAs-BC interactions play in remediating soil fertility and health. We also proved that the BC-amended soils were worthy of enriching essential BCAs communities, including Pseudomonas, Bacillus, Streptomyces, Pantoea, Serratia, Weissella, and Leuconostoc. Abscisic aldehyde had a positive correlation with BCAs genera, including Bacillus, Pseudomonas, Serratia, Pantoea, and Ligilactobacillus. Whereas Pseudomonas, Pseudonocardia, Weissella, Bacillus, and Pantoea responded strongly and positively to jasmonic acid. Additionally, benzoate exhibited a strong positive association with BCAs genera, namely, Pseudomonas, Pseudonocardia, Weissella, Bacillus, Pantoea, and Ligilactobacillus in the different plant tissues. In the rhizosphere zone, BCAs genera such as Pseudomonas and Ligilactobacillus responded strongly to phenyllactic acid. Plant secondary metabolites, including apigenin and naringenin, demonstrated a strong positive relationship with N-cycling enzymes, including urease and phos-phatase, respectively. Whereas palmitic acid, jasmonic acid, apiin, and abscisic aldehyde exhibited a significant positive correlation with soil TN, urease, pH, and AP, respectively. BugBase functional analysis confirmed that potentially pathogenic bacterial predicted phenotypes were low in the BC amendment. This work demonstrates how the multifunctionality of plant secondary metabolites-BCAs-BC interactions remediate soil fertility and suppress the presence of pathogens/parasites (e.g., Exserohilum, Aphis gossypii Glover, and Colletotrichum), thereby rejuvenating ratoon sugarcane growth and productivity.

引用

页数：17