Abstract
To provide theoretical basis for developing sugarcane intercropping cultivation system, cane yields, total economic benefit, soil physicochemical properties and bacterial community structure in rhizospheres of sugarcane intercropping with watermelon were analyzed. Based on traditional and modern high-throughput sequencing techniques, cane yields, total economic benefit, soil physicochemical properties and bacterial community structure in rhizosphere of sugarcanes between monoculture (CK) and sugarcane intercropping with watermelons (TM) were analyzed. Compared with CK, the contents of soil organic matter (SOM), total nitrogen (TN), phosphorus (TP) and potassium (TK), and the contents of available nitrogen (AN), phosphorus (AP) and potassium (AK) were all not significantly altered in sugarcane intercropping with watermelons system. Meanwhile, soil bacterial diversity, richness and soil bacterial functions were also not significantly changed in sugarcane intercropping with watermelons system. In addition, although some soil dominant bacterial phyla, such as Actinobacteria and other could be enriched, but Planctomycetes and Bacteroidetes also lost in rhizospheres of sugarcanes in TM treatments also lost. Meanwhile, Acidothermus, Bradyrhizobium, norank_o__SC-I-84, Bryobacter, Streptomyces, norank_f__DA111, Candidatus_Solibacter, Acidibacter and norank_f__Acidobacteriaceae__Subgroup_1_ were the unique soil dominant bacterial genera in rhizospheres of sugarcanes in CK. By contrast, Micromonospora, norank_f__Anaerolineaceae, unclassified_f__Micrococcaceae, norank_o__JG30-KF-CM45, norank_f__Elev-16S-1332, norank_c__Actinobacteria, Luedemannella, unclassified_f__Intrasporangiaceae, norank_f__ Nitrosomonadaceae, unclassified_f__Nocardioidaceae, norank_c__S085 and Defluviicoccus were the specific soil dominant bacterial genera in rhizospheres sugarcanes in TM treatment. Moreover, there were no significantly different in the functions of soil bacteria in rhizospheres of sugarcanes between TM and CK treatments, suggesting that soil bacterial functions in rhizospheres of sugarcanes did not significantly alter by intercropping with watermelons. In comparison with sugarcane monoculture, cane yields and total economic benefit all could be improved. In addition, soil physicochemical properties and soil bacterial diversity, richness and functions in rhizospheres of sugarcanes could not be significantly improved by intercropping with watermelons. However, the compositions of soil bacterial communities were altered, such as Micromonospora, enriched as the unique soil dominant bacterial genera in rhizospheres of sugarcanes intercropping with watermelons. All the above results showed that not only cane yields and total economic benefit could be improved but also soil physicochemical properties were not decreased. Furthermore, soil bacterial functions also were not significantly deteriorated, just the compositions of soil bacterial communities were partly altered by intercropping with watermelons. The stress resistance properties of sugarcanes could be improved by intercropping with watermelons for some benefit bacteria, such as Micromonospora enriched in rhizospheres of sugarcanes under sugarcane/watermelon intercropping systems.
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Claims 11
Claim · model-written summary
Sugarcane intercropping with watermelons did not significantly alter soil organic matter, total N, P and K relative to CK.
Verbatim
e1“Compared with CK, the contents of soil organic matter (SOM), total nitrogen (TN), phosphorus (TP) and potassium (TK), and the contents of available nitrogen (AN), phosphorus (AP) and potassium (AK) were all not significantly altered in sugarcane intercropping with watermelons system”
Claim · model-written summary
Sugarcane intercropping with watermelons did not significantly alter available N, P and K relative to CK.
Verbatim
e1“Compared with CK, the contents of soil organic matter (SOM), total nitrogen (TN), phosphorus (TP) and potassium (TK), and the contents of available nitrogen (AN), phosphorus (AP) and potassium (AK) were all not significantly altered in sugarcane intercropping with watermelons system”
Claim · model-written summary
Soil bacterial diversity, richness and functions were not significantly changed by sugarcane intercropping with watermelons.
- Taxon
- sugarcanee1
- Treatment
- sugarcane intercropping with watermelonse1
- Outcome
- soil bacterial diversity, richness and soil bacterial functionse1
- Direction
- not significantly changede1
Not reportedComparator
Verbatim
e1“Meanwhile, soil bacterial diversity, richness and soil bacterial functions were also not significantly changed in sugarcane intercropping with watermelons system”
Claim · model-written summary
Planctomycetes and Bacteroidetes were also lost in sugarcane rhizospheres under the intercropping treatment.
- Taxon
- sugarcanese1
- Treatment
- TM treatmentse1
- Outcome
- Planctomycetes and Bacteroidetese1
- Direction
- also loste1
Not reportedComparator
Verbatim
e1“although some soil dominant bacterial phyla, such as Actinobacteria and other could be enriched, but Planctomycetes and Bacteroidetes also lost in rhizospheres of sugarcanes in TM treatments also lost”
Claim · model-written summary
Actinobacteria could be enriched in sugarcane rhizospheres under the intercropping treatment.
Not reportedComparator
Verbatim
e1“although some soil dominant bacterial phyla, such as Actinobacteria and other could be enriched, but Planctomycetes and Bacteroidetes also lost in rhizospheres of sugarcanes in TM treatments also lost”
Claim · model-written summary
Acidothermus, Bradyrhizobium, Streptomyces and other listed genera were the unique dominant bacterial genera in CK sugarcane rhizospheres.
Verbatim
e1“Acidothermus, Bradyrhizobium, norank_o__SC-I-84, Bryobacter, Streptomyces, norank_f__DA111, Candidatus_Solibacter, Acidibacter and norank_f__Acidobacteriaceae__Subgroup_1_ were the unique soil dominant bacterial genera in rhizospheres of sugarcanes in CK”
Claim · model-written summary
Micromonospora and other listed genera were the specific dominant bacterial genera in sugarcane rhizospheres under the intercropping treatment.
- Taxon
- sugarcanese1
- Outcome
- specific soil dominant bacterial generae1
- Qualifier
- Micromonospora, norank_f__Anaerolineaceae, unclassified_f__Micrococcaceae, norank_o__JG30-KF-CM45, norank_f__Elev-16S-1332, norank_c__Actinobacteria, Luedemannella, unclassified_f__Intrasporangiaceae, norank_f__ Nitrosomonadaceae, unclassified_f__Nocardioidaceae, norank_c__S085 and Defluviicoccuse1
Verbatim
e1“Micromonospora, norank_f__Anaerolineaceae, unclassified_f__Micrococcaceae, norank_o__JG30-KF-CM45, norank_f__Elev-16S-1332, norank_c__Actinobacteria, Luedemannella, unclassified_f__Intrasporangiaceae, norank_f__ Nitrosomonadaceae, unclassified_f__Nocardioidaceae, norank_c__S085 and Defluviicoccus were the specific soil dominant bacterial genera in rhizospheres sugarcanes in TM treatment”
Claim · model-written summary
Sugarcane intercropped with watermelons could improve cane yields and total economic benefit relative to sugarcane monoculture.
Verbatim
e1“In comparison with sugarcane monoculture, cane yields and total economic benefit all could be improved”
e2“Compared with CK, the contents of soil organic matter (SOM), total nitrogen (TN), phosphorus (TP) and potassium (TK), and the contents of available nitrogen (AN), phosphorus (AP) and potassium (AK) were all not significantly altered in sugarcane intercropping with watermelons system”
Claim · model-written summary
Soil physicochemical properties could not be significantly improved by intercropping with watermelons.
- Taxon
- sugarcanese1
- Treatment
- intercropping with watermelonse1
- Outcome
- soil physicochemical propertiese1
- Direction
- could not be significantly improvede1
Not reportedComparator
Verbatim
e1“In addition, soil physicochemical properties and soil bacterial diversity, richness and functions in rhizospheres of sugarcanes could not be significantly improved by intercropping with watermelons”
Claim · model-written summary
The compositions of soil bacterial communities were altered by sugarcane intercropping with watermelons.
Verbatim
e1“However, the compositions of soil bacterial communities were altered, such as Micromonospora, enriched as the unique soil dominant bacterial genera in rhizospheres of sugarcanes intercropping with watermelons”
Claim · model-written summary
Stress resistance properties of sugarcane could be improved by intercropping with watermelons, possibly through Micromonospora.
Verbatim
e1“The stress resistance properties of sugarcanes could be improved by intercropping with watermelons for some benefit bacteria, such as Micromonospora enriched in rhizospheres of sugarcanes under sugarcane/watermelon intercropping systems”
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