Abstract
Auxins, as phytohormones and osmo-protectant, play important role to alleviate the adverse effect of drought stress on plant growth.Some bacteria equipped with ACC-deaminase activity along with some other growth promoting traits are helpful in improving plant growth under stresses.The efficiency of these bacteria is further improved when inoculation is supplemented with exogenous plant growth regulators.The combined use of these bacteria with auxins may be more effective under stressed conditions.A pot experiment was conducted to evaluate the efficacy of Pseudomonas fluorescens containing ACC-deaminase in combination with L-tryptophan for reducing drought stress in wheat.The P. fluorescens and L-tryptophan (@ 25 ppm) were applied, solely and in combination, on wheat by inducing drought stress at different growth stages.The foliar application of Ltryptophan was started after 15 days of germination and was repeated every week up to 2 weeks after grain filling stage.The results showed significant reduction in all parameters under drought.However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.Consequently, it may be concluded that combined use of Ltryptophan @ 25 ppm and P. fluorescens is an effective approach to improve wheat productivity under water limited conditions but it should be evaluated extensively under field studies before its recommendation to the farmers.
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Claims 10
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved plant height by 45.65% under drought.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescens
.JPG?width=60)
Pseudomonas fluorescense0other - Outcome
- plant heighte0
- Direction
- improvede0
- Value
- 45.65%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved root length by 81% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- root lengthe0
- Direction
- improvede0
- Value
- 81%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved chlorophyll-a by 94% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- chlorophyll-ae0
- Direction
- improvede0
- Value
- 94%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved chlorophyll-b by 72% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- chlorophyll-be0
- Direction
- improvede0
- Value
- 72%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved carotenoid contents by 98% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- carotenoid contentse0
- Direction
- improvede0
- Value
- 98%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved relative water contents by 33% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- relative water contentse0
- Direction
- improvede0
- Value
- 33%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved Na + /K + ratio in leaves by 49% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- Na + /K + ratio in leavese0
- Direction
- improvede0
- Value
- 49%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved Na + /K + ratio in by 43% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- Na + /K + ratio ine0
- Direction
- improvede0
- Value
- 43%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved spike length by 64% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- spike lengthe0
- Direction
- improvede0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
Claim · model-written summary
Combined L-tryptophan and P. fluorescens improved 1000 grains weight by 75% under drought.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- combined application of L-tryptophan @ 25 ppm and P. fluorescense0
- Interactor
- P. fluorescensPseudomonas fluorescense0other
- Outcome
- 1000 grains weighte0
- Direction
- improvede0
- Value
- 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, combined application of L-tryptophan @ 25 ppm and P. fluorescens significantly improved plant height (45.65%), root length (81%), chlorophyll-a (94%), chlorophyll-b (72%), carotenoid contents (98%), relative water contents (33%), Na + /K + ratio in leaves (49%) and grains (43%), spike length (64%) and 1000 grains weight (75%) under drought stress.”
t0“WHEAT”
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