Abstract
Abstract Red seaweed-derived biostimulants facilitate plant health and impart protection against abiotic stress conditions by their bioactive compounds and plant nutrients. The potency of red seaweed biostimulants (LBS6 and LBD1) on rice cv. IR-64 in response to fungicides induced stress was investigated in this study. Foliar application of LBS6 maintained the stomatal opening and leaf temperature under the fungicidal stress condition. Reactive Oxygen Species (ROS) such as hydrogen peroxide and superoxide radicals were significantly reduced in LBS6-treated stressed plants. After applying seaweed biostimulants, ROS production was stabilized by antioxidants viz ., CAT, APX, SOD, POD, and GR. LBS-6 application increased the Ca + and K + levels in the stressed plants, which perhaps interacted with ROS and stomatal opening signalling systems, respectively. In the rice plants, fungicidal stress elevated the expression of stress-responsive transcriptional factors ( E2F , HSFA2A , HSFB2B , HSFB4C , HSFC1A , and ZIP12 ). A decline in the transcript levels of stress-responsive genes was recorded in seaweed treated plants. For the first time, we present an integrative investigation of physicochemical and molecular components to describe the mechanism by which seaweed biostimulants in rice improve plant health under fungicidal stress conditions.
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Claims 6
Claim · model-written summary
Foliar LBS6 maintained stomatal opening and leaf temperature in rice under fungicidal stress.
- Taxon
- rice
Oryza sativae2 - Treatment
- Foliar application of LBS6e1
- Outcome
- stomatal opening and leaf temperaturee1
- Direction
- maintainede1
- Qualifier
- under the fungicidal stress conditione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Foliar application of LBS6 maintained the stomatal opening and leaf temperature under the fungicidal stress condition”
e2“rice cv. IR-64”
Claim · model-written summary
LBS6 significantly reduced reactive oxygen species, including hydrogen peroxide and superoxide radicals, in stressed rice plants.
- Taxon
- riceOryza sativae2
- Treatment
- LBS6e3
- Outcome
- Reactive Oxygen Species (ROS) such as hydrogen peroxide and superoxide radicalse3
- Direction
- reducede3
- Qualifier
- stressed plantse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Reactive Oxygen Species (ROS) such as hydrogen peroxide and superoxide radicals were significantly reduced in LBS6-treated stressed plants”
e2“rice cv. IR-64”
Claim · model-written summary
Seaweed biostimulants stabilized ROS production through antioxidant enzymes CAT, APX, SOD, POD and GR in rice.
- Taxon
- riceOryza sativae2
- Treatment
- seaweed biostimulantse4
- Gene
- CAT, APX, SOD, POD, and GRe4
- Outcome
- ROS productione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“After applying seaweed biostimulants, ROS production was stabilized by antioxidants viz ., CAT, APX, SOD, POD, and GR”
e2“rice cv. IR-64”
Claim · model-written summary
LBS-6 application increased Ca and K levels in stressed rice plants.
- Taxon
- riceOryza sativae2
- Treatment
- LBS-6 applicatione5
- Outcome
- Ca + and K + levelse5
- Direction
- increasede5
- Qualifier
- in the stressed plantse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“LBS-6 application increased the Ca + and K + levels in the stressed plants”
e2“rice cv. IR-64”
Claim · model-written summary
Fungicidal stress elevated expression of stress-responsive transcription factors E2F, HSFA2A, HSFB2B, HSFB4C, HSFC1A and ZIP12 in rice.
- Taxon
- riceOryza sativae6
- Treatment
- fungicidal stresse6
- Gene
- E2F , HSFA2A , HSFB2B , HSFB4C , HSFC1A , and ZIP12e6
- Outcome
- expression of stress-responsive transcriptional factorse6
- Direction
- elevatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“In the rice plants, fungicidal stress elevated the expression of stress-responsive transcriptional factors ( E2F , HSFA2A , HSFB2B , HSFB4C , HSFC1A , and ZIP12 )”
e2“rice cv. IR-64”
Claim · model-written summary
Seaweed treatment declined transcript levels of stress-responsive genes in rice.
- Taxon
- riceOryza sativae2
- Treatment
- seaweede7
- Outcome
- transcript levels of stress-responsive genese7
- Direction
- declinee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“A decline in the transcript levels of stress-responsive genes was recorded in seaweed treated plants”
e2“rice cv. IR-64”
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