Abstract
The aim of this study was to investigate the physiological basis and molecular mechanism of genotypic variation in drought response of maize seedlings. Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings. Drought induced a significant decrease of relative water content and osmotic potential of leaves, length and volume of roots, and total dry weight, but significantly increased malondialdehyde in DH seedlings. However, root dry weight , proline content and antioxidant enzyme activities increased more in LY than in DH. Forty-two spots in LY and 17 spots in DH that showed significant abundance variations were identified by matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry. These drought-responsive proteins were mainly involved in biological processes of photosynthesis, defense and oxidative stress, carbohydrate and energy metabolism, protein synthesis and processing, and cell wall biogenesis and degradation. Among them, proteins involved in defense and oxidative stress, and protein synthesis and processing were largely enriched in the LY genotype, which may contribute to a natural variation of drought resistance between LY and DH genotypes. The altered protein abundance and corresponding physiological-biochemical response shed some light on molecular mechanisms related to drought tolerance in drought-tolerant maize and provide key candidate proteins for genetic improvement of maize.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Drought decreased relative water content and osmotic potential of maize leaves.
- Organ / stage
- leavese2
- Treatment
- Droughte1
- Outcome
- relative water content and osmotic potential of leavese1
- Direction
- decreasee1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Drought induced a significant decrease of relative water content and osmotic potential of leaves, length and volume of roots, and total dry weight, but significantly increased malondialdehyde in DH seedlings”
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
Claim · model-written summary
Drought decreased root length and volume and total dry weight of maize seedlings.
- Organ / stage
- rootse1
- Treatment
- Droughte1
- Outcome
- length and volume of roots, and total dry weighte1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Drought induced a significant decrease of relative water content and osmotic potential of leaves, length and volume of roots, and total dry weight, but significantly increased malondialdehyde in DH seedlings”
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
Claim · model-written summary
Drought significantly increased malondialdehyde in Denghai 605 seedlings.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Drought induced a significant decrease of relative water content and osmotic potential of leaves, length and volume of roots, and total dry weight, but significantly increased malondialdehyde in DH seedlings”
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
Claim · model-written summary
Root dry weight increased more in Liyu 35 than in Denghai 605 under drought.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e3“root dry weight , proline content and antioxidant enzyme activities increased more in LY than in DH”
Claim · model-written summary
Proline content and antioxidant enzyme activities increased more in Liyu 35 than in Denghai 605 under drought.
- Material
- Liyu 35 (LY)e2
- Outcome
- proline content and antioxidant enzyme activitiese3
- Direction
- increased moree3
- Comparator
- DHe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e3“root dry weight , proline content and antioxidant enzyme activities increased more in LY than in DH”
Claim · model-written summary
Forty-two protein spots showed significant abundance variations in Liyu 35 leaves under drought.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e4“Forty-two spots in LY and 17 spots in DH that showed significant abundance variations were identified by matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry”
Claim · model-written summary
Seventeen protein spots showed significant abundance variations in Denghai 605 leaves under drought.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e4“Forty-two spots in LY and 17 spots in DH that showed significant abundance variations were identified by matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry”
Claim · model-written summary
Drought-responsive proteins were mainly involved in photosynthesis, defense and oxidative stress, and carbohydrate and energy metabolism.
- Organ / stage
- leavese2
- Outcome
- photosynthesis, defense and oxidative stress, carbohydrate and energy metabolisme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e6“These drought-responsive proteins were mainly involved in biological processes of photosynthesis, defense and oxidative stress, carbohydrate and energy metabolism, protein synthesis and processing, and cell wall biogenesis and degradation”
Claim · model-written summary
Drought-responsive proteins were mainly involved in protein synthesis and processing, and in cell wall biogenesis and degradation.
- Organ / stage
- leavese2
- Outcome
- protein synthesis and processing, and cell wall biogenesis and degradatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e6“These drought-responsive proteins were mainly involved in biological processes of photosynthesis, defense and oxidative stress, carbohydrate and energy metabolism, protein synthesis and processing, and cell wall biogenesis and degradation”
Claim · model-written summary
Proteins for defense and oxidative stress and for protein synthesis were enriched in Liyu 35 leaves.
- Material
- LY genotypee5
- Outcome
- defense and oxidative stress, and protein synthesis and processinge5
- Direction
- largely enrichede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Comparative physiological and proteomic analyses were conducted in the leaves of drought-tolerant Liyu 35 (LY) and drought-sensitive Denghai 605 (DH) maize genotype seedlings”
e5“proteins involved in defense and oxidative stress, and protein synthesis and processing were largely enriched in the LY genotype”
The same questions in other papers
drought · physiology: oxidative · Zea mays (maize)Positive and negative results
87 papers in the same direction as this paper · 8 in the opposite direction
- negative
- negative
- positive
92 papers more in this group
See all 96 papers →drought · physiology: water · Zea mays (maize)Positive and negative results
115 papers in the same direction as this paper · 39 in the opposite direction
- negative
- positive
- positive
151 papers more in this group
See all 155 papers →drought · growth · Zea mays (maize)Positive and negative results
307 papers in the same direction as this paper · 77 in the opposite direction
- positive
- positive
- positive
381 papers more in this group
See all 385 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.