Abstract
Summary The ability of fluorescent pseudomonads and glomalean fungi to promote plant growth has been reported many times. However, little is known of their effects on root morphogenesis. Growth and root morphogenesis were compared in tomato ( Lycopersicon esculentum ) plants inoculated or not with a model strain of Pseudomonas fluorescens (A6RI) or with the arbuscular mycorrhizal fungus Glomus mosseae (BEG12). Plants were cultivated in a sandy‐loam soil mixed with sand at two different ratios (2 : 1 and 1 : 2), in gnotobiotic conditions. Plant growth was evaluated by measuring root and shoot fresh weight, and various morphometric parameters were compared. Growth of control plants was less in the 1 : 2 than in the 2 : 1 soil : sand mixture, and root morphogenesis was also significantly altered by soil:sand mixture. P. fluorescens A6RI promoted plant growth and increased total root length, surface area and volume in the more fertile soil:sand mixture (2 : 1) whereas G. mosseae BEG12 did the same in the less fertile soil : sand mixture (1 : 2). The relevance of differences between the two types of organisms in relation to the environmental conditions favourable for the expression of their beneficial effects is discussed in the context of microbial inoculation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Pseudomonas fluorescens A6RI increased total root length, surface area and volume of tomato in the more fertile soil:sand mixture (2 : 1).
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- P. fluorescens A6RIe1
- Interactor
- P. fluorescens A6RI
.JPG?width=60)
Pseudomonas fluorescense1symbiont - Outcome
- total root length, surface area and volumee1
- Direction
- increasede1
- Comparator
- control plantse2
- Setting
- more fertile soil:sand mixture (2 : 1)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Growth and root morphogenesis were compared in tomato ( Lycopersicon esculentum ) plants inoculated or not with a model strain of Pseudomonas fluorescens (A6RI) or with the arbuscular mycorrhizal fungus Glomus mosseae (BEG12)”
e1“P. fluorescens A6RI promoted plant growth and increased total root length, surface area and volume in the more fertile soil:sand mixture (2 : 1) whereas G. mosseae BEG12 did the same in the less fertile soil : sand mixture (1 : 2)”
e2“Growth of control plants was less in the 1 : 2 than in the 2 : 1 soil : sand mixture”
Claim · model-written summary
Glomus mosseae BEG12 increased total root length, surface area and volume of tomato in the less fertile soil:sand mixture (1 : 2).
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- G. mosseae BEG12e1
- Interactor
- G. mosseae BEG12
Funneliformis mosseaee1symbiont - Outcome
- total root length, surface area and volumee1
- Direction
- increaseinferrede1
- Comparator
- control plantse2
- Setting
- less fertile soil : sand mixture (1 : 2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and root morphogenesis were compared in tomato ( Lycopersicon esculentum ) plants inoculated or not with a model strain of Pseudomonas fluorescens (A6RI) or with the arbuscular mycorrhizal fungus Glomus mosseae (BEG12)”
e1“P. fluorescens A6RI promoted plant growth and increased total root length, surface area and volume in the more fertile soil:sand mixture (2 : 1) whereas G. mosseae BEG12 did the same in the less fertile soil : sand mixture (1 : 2)”
e2“Growth of control plants was less in the 1 : 2 than in the 2 : 1 soil : sand mixture”
Claim · model-written summary
Growth of control tomato plants was less in the 1 : 2 soil:sand mixture than in the 2 : 1 mixture.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- Growth of control plantse2
- Direction
- lesse2
- Comparator
- 2 : 1 soil : sand mixturee2
- Setting
- 1 : 2e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and root morphogenesis were compared in tomato ( Lycopersicon esculentum ) plants inoculated or not with a model strain of Pseudomonas fluorescens (A6RI) or with the arbuscular mycorrhizal fungus Glomus mosseae (BEG12)”
e2“Growth of control plants was less in the 1 : 2 than in the 2 : 1 soil : sand mixture”
Claim · model-written summary
Root morphogenesis of tomato was significantly altered by the soil:sand mixture.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- soil:sand mixturee3
- Outcome
- root morphogenesise3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth and root morphogenesis were compared in tomato ( Lycopersicon esculentum ) plants inoculated or not with a model strain of Pseudomonas fluorescens (A6RI) or with the arbuscular mycorrhizal fungus Glomus mosseae (BEG12)”
e3“root morphogenesis was also significantly altered by soil:sand mixture”
The same questions in other papers
Funneliformis mosseae · growth · Solanum lycopersicum (tomato)Positive and negative results
15 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
13 papers more in this group
See all 17 papers →Pseudomonas fluorescens · growth · Solanum lycopersicum (tomato)Positive and negative results
33 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
32 papers more in this group
See all 36 papers →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.