Blue light made soybean stems thicker by increasing the water-conducting tissue area and shortening the cells, which stopped them from growing taller.

Scientific Claim

Blue light exposure was associated with increased stem xylem area and reduced cell longitudinal length in both soybean cultivars, contributing to stem thickening and reduced elongation.

Original Statement

“Blue light increased soybean stem xylem area and diameter while reducing plant height and cell longitudinal length (Abstract and Figure 1)”

From study:Hormone Regulation Effect of Blue Light on Soybean Stem Internode Growth Based on the Grey Correlation Analysis Model

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The claim describes observed anatomical changes without causal language, accurately reflecting the study's histological findings.

Evidence from Studies

Supporting (1)

Hormone Regulation Effect of Blue Light on Soybean Stem Internode Growth Based on the Grey Correlation Analysis Model

Cohort Study

2025 May 6

Contradicting (0)

No contradicting evidence found

Source Study

Hormone Regulation Effect of Blue Light on Soybean Stem Internode Growth Based on the Grey Correlation Analysis Model

Score: 44

DOI: 10.3390/ijms26094411

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Blue light made the levels of a key growth hormone (GA3) drop by about 14% in tall soybeans and 20% in short soybeans when grown in the dark versus under blue light.

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