Abstract
The effects of the deprivation of boron (B) on Rhizobium –legume signaling and preinfection events have been investigated in pea ( Pisum sativum L. cv. Argona). The capacity of root exudates to induce the activity of nodulation genes was modulated by B nutrition in the host plant. Exudates derived from B-deficient pea plants led to a low level of nod -gene expression that could be correlated with poor root hair curling. However, inoculation of B-deficient plants with bacteria grown in the presence of the nod -gene inducing hesperetin, restored root hair curling. The attachment of bacteria to roots was also diminished in plants grown in the absence of the micronutrient, and it was not recovered by hesperetin. Both phenomena provoked a reduction in nodulation of more than 50%. Furthermore, infection thread development was arrested at very early stages, and cell invasion by endocytosis was precluded, leading to almost empty of bacteria B-deficient nodules.
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Claims 7
Claim · model-written summary
Exudates from boron-deficient pea induced low nod-gene expression.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- B-deficiente0
- Outcome
- nod -gene expressione0
- Direction
- low levele0
RhizobiumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exudates derived from B-deficient pea plants led to a low level of nod -gene expression”
e1“Rhizobium”
Claim · model-written summary
Low nod-gene expression correlated with poor root hair curling.
- Taxon
- peaLathyrus oleraceuse1
- Gene
- nod -genee0
- Outcome
- root hair curlinge0
- Direction
- poore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low level of nod -gene expression that could be correlated with poor root hair curling”
e1“in pea ( Pisum sativum L. cv. Argona)”
Claim · model-written summary
Hesperetin-grown bacteria restored root hair curling in boron-deficient plants.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- inoculation of B-deficient plants with bacteria grown in the presence of the nod -gene inducing hesperetine0
- Outcome
- root hair curlinge0
- Direction
- restorede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation of B-deficient plants with bacteria grown in the presence of the nod -gene inducing hesperetin, restored root hair curling.”
e2“Rhizobium”
e1“in pea ( Pisum sativum L. cv. Argona)”
Claim · model-written summary
Boron deprivation diminished bacterial attachment to roots, which hesperetin did not restore.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- absence of the micronutriente0
- Outcome
- attachment of bacteria to rootse0
- Direction
- diminishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The attachment of bacteria to roots was also diminished in plants grown in the absence of the micronutrient, and it was not recovered by hesperetin.”
e2“Rhizobium”
e1“in pea ( Pisum sativum L. cv. Argona)”
Claim · model-written summary
Boron deprivation reduced nodulation by more than 50%.
- Taxon
- peaLathyrus oleraceuse1
- Treatment
- B-deficiente2
- Outcome
- nodulatione0
- Direction
- reductione0
- Value
- more than 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both phenomena provoked a reduction in nodulation of more than 50%.”
e2“B-deficient pea plants”
e1“in pea ( Pisum sativum L. cv. Argona)”
Claim · model-written summary
Infection thread development stopped at very early stages under boron deficiency.
- Taxon
- peaLathyrus oleraceuse1
- Outcome
- infection thread developmente0
- Direction
- arrestede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“infection thread development was arrested at very early stages”
e1“in pea ( Pisum sativum L. cv. Argona)”
Claim · model-written summary
Endocytic cell invasion was prevented and boron-deficient nodules were nearly empty of bacteria.
- Taxon
- peaLathyrus oleraceuse1
- Outcome
- cell invasion by endocytosise0
- Direction
- precludede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cell invasion by endocytosis was precluded, leading to almost empty of bacteria B-deficient nodules.”
e1“in pea ( Pisum sativum L. cv. Argona)”
The same questions in other papers
inoculation · Rhizobium · Lathyrus oleraceus (pea)Results differ
18 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
19 papers more in this group
See all 23 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.