Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Acquired Reactive Perforating Collagenosis Treated with Upadacitinib: A Case Report and Literature Review.

Clinical, cosmetic and investigational dermatology·2026

Same author

CircBARD1 suppresses tumor progression driven by H3K18 lactylation-CCNA2 axis in human bladder cancer.

Cellular oncology (Dordrecht, Netherlands)·2026

Same author

Borderline lepromatous leprosy mimicking prurigo nodularis.

Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG·2026

Same author

Association between platelet-white cell ratio and all-cause mortality in critically ill patients with atrial fibrillation: a retrospective cohort study.

BMC cardiovascular disorders·2026

Same author

Outcomes of Laparoscopic Radical Dissection in Gastric Cancer Patients Based on the Systematic Mesogastric Excision Concept: A Retrospective Study.

Annali italiani di chirurgia·2026

Same author

Encapsulation of Fe<sub>3</sub>O<sub>4</sub> and Lipase in a Squarate Metal-Organic Framework for Nonaqueous Catalysis.

Langmuir : the ACS journal of surfaces and colloids·2026

Search research articles

Related Experiment Video

Updated: Jun 3, 2026

Caenorhabditis Sieve: A Low-tech Instrument and Methodology for Sorting Small Multicellular Organisms

Caenorhabditis Sieve: A Low-tech Instrument and Methodology for Sorting Small Multicellular Organisms

Published on: July 4, 2018

Unplugging the callose plug from sieve pores.

Bo Xie¹, Zonglie Hong

¹Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID, USA.

Plant Signaling & Behavior

|March 10, 2011

Summary

This summary is machine-generated.

Scientists identified callose synthase 7 (CalS7) as the enzyme responsible for callose deposition in plant sieve plates. Mutant plants lacking CalS7 showed impaired phloem function and reduced growth.

More Related Videos

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Related Experiment Videos

Last Updated: Jun 3, 2026

Caenorhabditis Sieve: A Low-tech Instrument and Methodology for Sorting Small Multicellular Organisms

Caenorhabditis Sieve: A Low-tech Instrument and Methodology for Sorting Small Multicellular Organisms

Published on: July 4, 2018

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

Published on: October 31, 2013

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Area of Science:

Plant Biology
Molecular Biology
Biochemistry

Background:

Callose, a polysaccharide, is known to be present in sieve plates, but its synthesis pathway was previously unelucidated.
Sieve plates are critical components of the phloem, responsible for nutrient transport in plants.

Purpose of the Study:

To identify the enzyme responsible for callose synthesis in sieve plates.
To investigate the physiological role of callose deposition in phloem function and plant development.

Main Methods:

Identification of callose synthase 7 (CalS7), also known as glucan synthase-like 7 (GSL7), through independent laboratory research.
Analysis of mutant plants lacking functional CalS7 to assess callose deposition and phloem characteristics.

Main Results:

Mutant plants defective in CalS7 failed to synthesize callose in developing sieve plates and stress-induced sieve pores.
Reduced number and diameter of sieve pores were observed in mutant plants.
Significant reduction in phloem conductivity, leading to stunted growth and decreased seed production in mutant plants.

Conclusions:

Callose synthase 7 (CalS7/GSL7) is the key enzyme for callose deposition in sieve plates.
CalS7-mediated callose synthesis is essential for proper sieve plate development, phloem function, and overall plant growth and reproduction.