Abstract
This study investigated the effect of inoculation with Bradyrhizobium spp. on nitrogen metabolism and growth of two contrasting Vigna unguiculata cultivars exposed to both inoculation and water deficit. The study was carried out in Universidade Federal Rural da Amazonia (01°27′S and 48°26′W). The plants remained in greenhouse environment. The experimental design used was completely randomised with 2 cultivars (drought tolerant and sensitive) combined with 2 water regimes (water deficit and control), and 2 inoculation treatments (inoculated and non-inoculated), totalizing 8 treatments. The variables evaluated were leaf relative water content, nitrate reductase activity, nitrogen compounds, and growth parameters. Results of this study showed that both cultivars presented increases in nitrate and proline, compared with non-inoculated plants. Water deficiency induced more intense reductions in shoot dry matter of non-inoculated plants, compared with inoculated plants. This investigation confirmed the hypothesis that inoculation with Bradyrhizobium improves nitrogen assimilation, osmotic adjustment and growth parameters in Vigna unguiculata plants.
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Claims 3
Claim · model-written summary
Both cowpea cultivars showed increases in nitrate and proline with Bradyrhizobium inoculation compared with non-inoculated plants.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- inoculation with Bradyrhizobium sppe0
- Interactor
- Bradyrhizobium spp
Bradyrhizobiume0symbiont - Outcome
- nitrate and prolinee1
- Direction
- increasese1
- Comparator
- non-inoculated plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with Bradyrhizobium spp”
e1“both cultivars presented increases in nitrate and proline, compared with non-inoculated plants”
t0“cowpea”
Claim · model-written summary
Water deficiency caused more intense reductions in shoot dry matter in non-inoculated cowpea plants than in inoculated plants.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Water deficiencye0
- Outcome
- shoot dry mattere0
- Direction
- more intense reductionse0
- Qualifier
- non-inoculated plantse0
- Comparator
- inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficiency induced more intense reductions in shoot dry matter of non-inoculated plants, compared with inoculated plants”
t0“cowpea”
Claim · model-written summary
The authors conclude that Bradyrhizobium inoculation improves nitrogen assimilation, osmotic adjustment and growth parameters in Vigna unguiculata.
- Taxon
- Vigna unguiculataVigna unguiculatae0
- Treatment
- inoculation with Bradyrhizobiume0
- Interactor
- BradyrhizobiumBradyrhizobiume0symbiont
- Outcome
- nitrogen assimilation, osmotic adjustment and growth parameterse0
- Direction
- improvese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with Bradyrhizobium improves nitrogen assimilation, osmotic adjustment and growth parameters in Vigna unguiculata plants”
The same questions in other papers
drought · growth · Vigna unguiculata (cowpea)Results differ
42 papers in the same direction as this paper · 9 in the opposite direction
- negative
- positive
- positive
48 papers more in this group
See all 52 papers →inoculation · physiology: osmolytes · Vigna unguiculata (cowpea)Positive and negative results
2 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
inoculation · physiology: water · Vigna unguiculata (cowpea)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.