Abstract
Paenibacillus is a large genus of Gram-positive, facultative anaerobic, endospore-forming bacteria. The genus Paenibacillus currently comprises more than 150 named species, approximately 20 of which have nitrogen-fixation ability. The N 2 -fixing Paenibacillus strains have potential uses as a bacterial fertilizer in agriculture. In this study, 179 bacterial strains were isolated by using nitrogen-free medium after heating at 85 °C for 10 min from 69 soil samples collected from different plant rhizospheres in different areas. Of the 179 bacterial strains, 25 Paenibacillus strains had nifH gene encoding Fe protein of nitrogenase and showed nitrogenase activities. Of the 25 N 2 -fixing Paenibacillus strains, 22 strains produced indole-3-acetic acid (IAA). 21 strains out of the 25 N 2 -fixing Paenibacillus strains inhibited at least one of the 6 plant pathogens Rhizoctonia cerealis , Fusarium graminearum , Gibberella zeae , Fusarium solani , Colletotrichum gossypii and Alternaria longipes . 18 strains inhibited 5 plant pathogens and Paenibacillus sp. SZ-13b could inhibit the growth of all of the 6 plant pathogens. According to the nitrogenase activities, antibacterial capacities and IAA production, we chose eight strains to inoculate wheat, cucumber and tomato. Our results showed that the 5 strains Paenibacillus sp. JS-4, Paenibacillus sp. SZ-10, Paenibacillus sp. SZ-14, Paenibacillus sp. BJ-4 and Paenibacillus sp. SZ-15 significantly promoted plant growth and enhanced the dry weight of plants. Hence, the five strains have the greater potential to be used as good candidates for biofertilizer to facilitate sustainable development of agriculture.
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Claims 3
Claim · model-written summary
Five Paenibacillus strains significantly promoted wheat growth and dry weight.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- eight strains to inoculate wheat, cucumber and tomatoe1
- Interactor
- Paenibacillus sp. JS-4e0symbiont
- Outcome
- plant growth and enhanced the dry weight of plantse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 5 strains Paenibacillus sp. JS-4, Paenibacillus sp. SZ-10, Paenibacillus sp. SZ-14, Paenibacillus sp. BJ-4 and Paenibacillus sp. SZ-15 significantly promoted plant growth and enhanced the dry weight of plants.”
e1“we chose eight strains to inoculate wheat, cucumber and tomato.”
Claim · model-written summary
Five Paenibacillus strains significantly promoted cucumber growth and dry weight.
- Taxon
- cucumber
Cucumis sativuse1 - Treatment
- eight strains to inoculate wheat, cucumber and tomatoe1
- Interactor
- Paenibacillus sp. SZ-10e0symbiont
- Outcome
- plant growth and enhanced the dry weight of plantse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 5 strains Paenibacillus sp. JS-4, Paenibacillus sp. SZ-10, Paenibacillus sp. SZ-14, Paenibacillus sp. BJ-4 and Paenibacillus sp. SZ-15 significantly promoted plant growth and enhanced the dry weight of plants.”
e1“we chose eight strains to inoculate wheat, cucumber and tomato.”
Claim · model-written summary
Five Paenibacillus strains significantly promoted tomato growth and dry weight.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- eight strains to inoculate wheat, cucumber and tomatoe1
- Interactor
- Paenibacillus sp. SZ-14e0symbiont
- Outcome
- plant growth and enhanced the dry weight of plantse0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 5 strains Paenibacillus sp. JS-4, Paenibacillus sp. SZ-10, Paenibacillus sp. SZ-14, Paenibacillus sp. BJ-4 and Paenibacillus sp. SZ-15 significantly promoted plant growth and enhanced the dry weight of plants.”
e1“we chose eight strains to inoculate wheat, cucumber and tomato.”
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See all 441 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.