Paper · 1998 · Photosynthetica

Changes in net photosynthetic rate and chlorophyll fluorescence in potato leaves induced by water stress

P.S. Basu; Ashoo Sharma; N.P. Sukumaran

8
claims
16
verbatim quotes
64
citations
1
research areas
✓
Open access

Abstract

Net rates of photosynthesis (PN) saturated by irradiance of >500 μmol m-2 s-1 (PAR) significantly decreased in water-stressed potato (Solanum tuberosum L. cv. Kufri Sindhuri) plants. The quantum yield of photochemical energy conversion (Fv/Fm), relative electron transport rate (ETR), and photochemical quenching (Qp) exhibited a parallel decline at high irradiance. A slight decrease in relative water content (RWC) was accompanied by a drastic decline in leaf water potential (Ψw) from -0.2 to -1.0 MPa. Dehydrated leaves showed an increase in the amount of total soluble sugars per unit leaf area which inhibited the photosynthesis in a feedback manner. After rewatering, PN and Fv/Fm were restored to the values of control plants within 24 h, and the restoration was accompanied by a proportionate lowering of content of total soluble sugars in the leaves.

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Claims 8

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Net photosynthetic rate (PN) at saturating irradiance decreased significantly in water-stressed potato plants.

Material
Kufri Sindhurie0
Treatment
water-stressede0
Outcome
Net rates of photosynthesise0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Net rates of photosynthesis (PN) saturated by irradiance of >500 μmol m-2 s-1 (PAR) significantly decreased in water-stressed potato (Solanum tuberosum L. cv. Kufri Sindhuri) plants”

✓ located verbatim in the source · abstract, characters 0–181 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Fv/Fm, relative electron transport rate and photochemical quenching declined in parallel at high irradiance under water stress.

Treatment
water stresst0
Outcome
quantum yield of photochemical energy conversion (Fv/Fm), relative electron transport rate (ETR), and photochemical quenching (Qp)e0
Direction
declinee0
Qualifier
high irradiancee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“The quantum yield of photochemical energy conversion (Fv/Fm), relative electron transport rate (ETR), and photochemical quenching (Qp) exhibited a parallel decline at high irradiance”

✓ located verbatim in the source · abstract, characters 183–365 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Relative water content decreased slightly in water-stressed potato leaves.

Treatment
water stresst0
Outcome
relative water content (RWC)e0
Direction
slight decreasee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“A slight decrease in relative water content (RWC) was accompanied by a drastic decline in leaf water potential (Ψw) from -0.2 to -1.0 MPa”

✓ located verbatim in the source · abstract, characters 367–504 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Leaf water potential declined drastically from -0.2 to -1.0 MPa in water-stressed potato leaves.

Treatment
water stresst0
Outcome
leaf water potential (Ψw)e0
Direction
drastic declinee0
Value
-0.2 to -1.0 MPae0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“A slight decrease in relative water content (RWC) was accompanied by a drastic decline in leaf water potential (Ψw) from -0.2 to -1.0 MPa”

✓ located verbatim in the source · abstract, characters 367–504 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Dehydrated potato leaves showed an increase in total soluble sugars per unit leaf area.

Treatment
Dehydratede0
Outcome
amount of total soluble sugars per unit leaf areae0
Direction
increasee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“Dehydrated leaves showed an increase in the amount of total soluble sugars per unit leaf area which inhibited the photosynthesis in a feedback manner”

✓ located verbatim in the source · abstract, characters 506–655 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors state that the accumulated soluble sugars inhibited photosynthesis in a feedback manner.

Compound
total soluble sugarse0
Outcome
photosynthesise0
Qualifier
in a feedback mannere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“Dehydrated leaves showed an increase in the amount of total soluble sugars per unit leaf area which inhibited the photosynthesis in a feedback manner”

✓ located verbatim in the source · abstract, characters 506–655 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

After rewatering, PN and Fv/Fm were restored to control values within 24 h.

Treatment
rewateringe0
Outcome
PN and Fv/Fme0
Direction
restorede0
Qualifier
within 24 he0
Comparator
control plantse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“After rewatering, PN and Fv/Fm were restored to the values of control plants within 24 h”

✓ located verbatim in the source · abstract, characters 657–745 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

After rewatering, the restoration was accompanied by a proportionate lowering of total soluble sugar content in the leaves.

Organ / stage
leavese1
Treatment
rewateringe0
Outcome
content of total soluble sugarse1
Direction
loweringe1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

t0

“potato leaves induced by water stress”

✓ located verbatim in the source · title, characters 67–104 · show in text ↑
e0

“After rewatering”

✓ located verbatim in the source · abstract, characters 657–673 · show in text ↑
e1

“the restoration was accompanied by a proportionate lowering of content of total soluble sugars in the leaves”

✓ located verbatim in the source · abstract, characters 751–859 · show in text ↑

drought · physiology: water · Solanum tuberosum (potato)Results differ

14 papers: 6 positive, 8 negative or no effect

7 papers in the same direction as this paper · 6 in the opposite direction

  1. positive
  2. positive
  3. positive

10 papers more in this group

See all 14 papers →

drought · physiology: photosynthesis · Solanum tuberosum (potato)Positive and negative results

12 papers: 1 positive, 11 negative or no effect

10 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. negative

8 papers more in this group

See all 12 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.