Abstract
Phosphorus (P) is one of the most limiting nutrients in agricultural production and silicon (Si) application is a strategy used to improve phosphate nutrition in plants; however, the action mechanisms of Si remain poorly understood in sorghum plants, under P deficiency of sufficiency. This study aimed at evaluating whether the supply of Si via nutrient solution benefits sorghum plants cultivated under sufficiency of deficiency of P, and investigate the interaction between nutritional and physiological mechanisms involved. In a completely randomized design with six replicates, treatments were arranged in a 2 × 2 factorial scheme, characterized by P sufficiency or deficiency, in combination with the presence (1.5 mmol L−1) of absence of Si in the nutrient solution. The experiment was carried out in pots filled with sand. Plants cultivated without Si and under P-deficiency had a reduced accumulation of P in its aerial parts, which compromised its physiology and growth. The inclusion of Si via nutrient solution increased P accumulation and its use efficiency in sorghum plants, and led to a reduction in the electrolyte leakage and an increase in the relative chlorophyll index of leaves. Similarly, the production of phenolic compounds and the quantum efficiency of the photosystem II (Fv/Fm) were also benefited from Si inclusion, as well as the diameter of the stems, which was also augmented together with plants’ height and dry matter production in these plants cultivated under P deficiency and sufficiency.
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Claims 11
Claim · model-written summary
Phosphorus deficiency without silicon reduced phosphorus accumulation in sorghum shoots.
- Treatment
- without Si and under P-deficiencye0
- Outcome
- accumulation of P in its aerial partse0
- Direction
- reducede0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants cultivated without Si and under P-deficiency had a reduced accumulation of P in its aerial parts”
t0“sorghum plants”
Claim · model-written summary
Phosphorus deficiency without silicon compromised sorghum physiology and growth.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which compromised its physiology and growth”
t0“sorghum plants”
Claim · model-written summary
Silicon in nutrient solution increased phosphorus accumulation in sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inclusion of Si via nutrient solution increased P accumulation and its use efficiency in sorghum plants”
Claim · model-written summary
Silicon in nutrient solution increased phosphorus use efficiency in sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inclusion of Si via nutrient solution increased P accumulation and its use efficiency in sorghum plants”
Claim · model-written summary
Silicon reduced leaf electrolyte leakage in sorghum.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“led to a reduction in the electrolyte leakage and an increase in the relative chlorophyll index of leaves”
t0“sorghum plants”
Claim · model-written summary
Silicon increased the relative chlorophyll index of sorghum leaves.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in the relative chlorophyll index of leaves”
t0“sorghum plants”
Claim · model-written summary
Silicon benefited phenolic compound production in sorghum.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the production of phenolic compounds and the quantum efficiency of the photosystem II (Fv/Fm) were also benefited from Si inclusion”
t0“sorghum plants”
Claim · model-written summary
Silicon benefited photosystem II quantum efficiency in sorghum.
- Treatment
- Si inclusione0
- Outcome
- quantum efficiency of the photosystem II (Fv/Fm)e0
- Direction
- benefitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the production of phenolic compounds and the quantum efficiency of the photosystem II (Fv/Fm) were also benefited from Si inclusion”
t0“sorghum plants”
Claim · model-written summary
Silicon increased sorghum stem diameter under phosphorus deficiency and sufficiency.
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the diameter of the stems, which was also augmented together with plants’ height and dry matter production in these plants cultivated under P deficiency and sufficiency”
t0“sorghum plants”
Claim · model-written summary
Silicon increased sorghum height under phosphorus deficiency and sufficiency.
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants’ height and dry matter production in these plants cultivated under P deficiency and sufficiency”
t0“sorghum plants”
Claim · model-written summary
Silicon increased sorghum dry matter production under phosphorus deficiency and sufficiency.
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter production in these plants cultivated under P deficiency and sufficiency”
t0“sorghum plants”
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