Abstract
Water deficit stress is one of the major limiting factors that adversely affect plant growth and yield production. Some rhizosphere bacteria are known to promote plant growth in such stressful conditions. To study the response of quantifying canola growth, yield and yield components, to root colonization by two species of mycorrhizal fungi, a two-year field experiment was conducted at the research farm of Zanjan University. The main plot conditions were irrigation at 85% (S1), 70% (S2) and 55% (S3) of field capacity which were defined as no stress, mild and severe stress. The subplot treatments included three levels of mycorrhizal inoculation: non inoculation (control), G. Mosseae and G. Intraradices. The results showed that regardless of water deficit stress, colonized plants produced more biomass, seed and oil yield than non inoculated plants. Water deficit stress reduced the RWC and oil percentage of the seeds, although mycorrhizal improved these traits. Water deficit strikingly decreased the linoleic acid content in the seeds in contrast with increased stearic, oleic, arachidic and linolenic acids in the canola seeds. The presence of bacteria increased the seed oil percentage, oleic and linoleic contents. However, it decreased arachidic, particularly when the plants were subjected to water deficit stress.
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Claims 7
Claim · model-written summary
Mycorrhizal colonization increased canola biomass, seed yield and oil yield relative to non inoculated plants regardless of water deficit.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- colonized plantse0
- Interactor
- mycorrhizal fungit1symbiont
- Outcome
- biomass, seed and oil yielde0
- Direction
- moree0
- Comparator
- non inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“regardless of water deficit stress, colonized plants produced more biomass, seed and oil yield than non inoculated plants”
t0“canola (Brassica napus L.)”
t1“two species of mycorrhizal fungi”
Claim · model-written summary
Water deficit reduced canola RWC and seed oil percentage.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- Water deficit stresse0
- Outcome
- RWC and oil percentage of the seedse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit stress reduced the RWC and oil percentage of the seeds”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Mycorrhizal colonization improved canola RWC and seed oil percentage under water deficit.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- mycorrhizale0
- Outcome
- these traitse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although mycorrhizal improved these traits”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Water deficit decreased linoleic acid content in canola seeds.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- Water deficite0
- Outcome
- linoleic acid content in the seedse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit strikingly decreased the linoleic acid content in the seeds”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Water deficit increased stearic, oleic, arachidic and linolenic acids in canola seeds.
- Taxon
- canolaBrassica napus var. napuse0
- Treatment
- Water deficitt1
- Outcome
- stearic, oleic, arachidic and linolenic acids in the canola seedse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased stearic, oleic, arachidic and linolenic acids in the canola seeds”
t0“canola (Brassica napus L.)”
t1“Water deficit stress reduced the RWC and oil percentage of the seeds”
Claim · model-written summary
Bacteria increased seed oil percentage and oleic and linoleic contents.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- The presence of bacteriae0
- Outcome
- seed oil percentage, oleic and linoleic contentse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of bacteria increased the seed oil percentage, oleic and linoleic contents”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Bacteria decreased arachidic acid, particularly under water deficit.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- bacteriat1
- Outcome
- arachidice0
- Direction
- decreasede0
- Qualifier
- particularly when the plants were subjected to water deficit stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, it decreased arachidic, particularly when the plants were subjected to water deficit stress”
t0“canola (Brassica napus L.)”
t1“The presence of bacteria increased the seed oil percentage, oleic and linoleic contents”
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