Paper · 2026 · Microorganisms

Enhancement of Sweet Corn Seed Quality and Early Seedling Vigor by Priestia sp. RMT2NF4: Functional and Genomic Characterization of a Plant Growth-Promoting Strain

Tawanchai Khuendee; Yupa Chromkaew; Nuttapon Khongdee; et al.

7
claims
18
verbatim quotes
0
citations
4
research areas
✓
Open access · cc-by

Abstract

The development of sustainable microbial inoculants for crop production requires strains with demonstrated plant growth-promoting performance and well-characterized functional potential. This study evaluated the effect of Priestia sp. RMT2NF4, isolated from the rice rhizosphere, on sweet corn (Zea mays L.) seed physiological quality and early seedling vigor, supported by whole-genome sequencing analysis. Seed treatment effects were evaluated using a between-paper germination assay under controlled conditions at 25 °C for 7 days. Seed treatment with RMT2NF4 significantly increased germination percentage, germination index, and seedling growth rate by 13.26%, 21.30%, and 23.71%, respectively (p < 0.05). Inoculated seedlings also exhibited significantly greater shoot length, while root length and abnormal seedling proportion showed numerical but non-significant improvements. Genomic analysis identified genes putatively associated with tryptophan biosynthesis, nutrient acquisition, and stress adaptation. The integration of phenotypic validation and genome-informed functional profiling highlights the potential of RMT2NF4 and provides a basis for further evaluation of RMT2NF4 as a candidate plant growth-promoting bacterium to support sustainable sweet corn production and reduce reliance on chemical inputs.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 7

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RMT2NF4 seed treatment increased sweet corn germination percentage by 13.26%.

Taxon
sweet cornt0
Treatment
Seed treatment with RMT2NF4e0
Interactor
RMT2NF4e0symbiont
Outcome
germination percentagee0
Direction
increasede0
Value
13.26%e0

Not reportedComparator

Verbatim

e0

“Seed treatment with RMT2NF4 significantly increased germination percentage, germination index, and seedling growth rate by 13.26%, 21.30%, and 23.71%, respectively (p < 0.05).”

✓ located verbatim in the source · abstract, characters 535–710 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RMT2NF4 seed treatment increased sweet corn germination index by 21.30%.

Taxon
sweet cornt0
Treatment
Seed treatment with RMT2NF4e0
Interactor
RMT2NF4e0symbiont
Outcome
germination indexe0
Direction
increasede0
Value
21.30%e0

Not reportedComparator

Verbatim

e0

“Seed treatment with RMT2NF4 significantly increased germination percentage, germination index, and seedling growth rate by 13.26%, 21.30%, and 23.71%, respectively (p < 0.05).”

✓ located verbatim in the source · abstract, characters 535–710 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

RMT2NF4 seed treatment increased sweet corn seedling growth rate by 23.71%.

Taxon
sweet cornt0
Treatment
Seed treatment with RMT2NF4e0
Interactor
RMT2NF4e0symbiont
Outcome
seedling growth ratee0
Direction
increasede0
Value
23.71%e0

Not reportedComparator

Verbatim

e0

“Seed treatment with RMT2NF4 significantly increased germination percentage, germination index, and seedling growth rate by 13.26%, 21.30%, and 23.71%, respectively (p < 0.05).”

✓ located verbatim in the source · abstract, characters 535–710 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Inoculated sweet corn seedlings had greater shoot length.

Taxon
sweet cornt0
Treatment
Inoculatede0
Interactor
RMT2NF4t1symbiont
Outcome
shoot lengthe0
Direction
greatere0

Not reportedComparator

Verbatim

e0

“Inoculated seedlings also exhibited significantly greater shoot length, while root length and abnormal seedling proportion showed numerical but non-significant improvements.”

✓ located verbatim in the source · abstract, characters 711–884 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
t1

“Priestia sp. RMT2NF4”

✓ located verbatim in the source · title, characters 67–87 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Inoculated sweet corn seedlings showed a numerical but non-significant improvement in root length.

Taxon
sweet cornt0
Treatment
Inoculatede0
Interactor
RMT2NF4t1symbiont
Outcome
root lengthe0
Direction
improvementse0

Not reportedComparator

Verbatim

e0

“Inoculated seedlings also exhibited significantly greater shoot length, while root length and abnormal seedling proportion showed numerical but non-significant improvements.”

✓ located verbatim in the source · abstract, characters 711–884 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
t1

“Priestia sp. RMT2NF4”

✓ located verbatim in the source · title, characters 67–87 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Inoculated sweet corn seedlings showed a numerical but non-significant improvement in abnormal seedling proportion.

Taxon
sweet cornt0
Treatment
Inoculatede0
Interactor
RMT2NF4t1symbiont
Outcome
abnormal seedling proportione0
Direction
improvementse0

Not reportedComparator

Verbatim

e0

“Inoculated seedlings also exhibited significantly greater shoot length, while root length and abnormal seedling proportion showed numerical but non-significant improvements.”

✓ located verbatim in the source · abstract, characters 711–884 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
t1

“Priestia sp. RMT2NF4”

✓ located verbatim in the source · title, characters 67–87 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The RMT2NF4 genome contains genes putatively associated with tryptophan biosynthesis, nutrient acquisition and stress adaptation.

Taxon
sweet cornt0
Interactor
RMT2NF4t1symbiont
Outcome
genes putatively associated with tryptophan biosynthesis, nutrient acquisition, and stress adaptatione0

Not reportedDirection

Verbatim

e0

“Genomic analysis identified genes putatively associated with tryptophan biosynthesis, nutrient acquisition, and stress adaptation.”

✓ located verbatim in the source · abstract, characters 885–1015 · show in text ↑
t0

“Sweet Corn”

✓ located verbatim in the source · title, characters 15–25 · show in text ↑
t1

“Priestia sp. RMT2NF4”

✓ located verbatim in the source · title, characters 67–87 · show in text ↑

seed treatment · growth · Zea mays (maize)Positive and negative results

267 papers: 239 positive, 28 negative or no effect

238 papers in the same direction as this paper · 28 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

263 papers more in this group

See all 267 papers →

inoculation · growth · Zea mays (maize)Positive and negative results

699 papers: 635 positive, 64 negative or no effect

634 papers in the same direction as this paper · 61 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

695 papers more in this group

See all 699 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.