PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Compressive stress shapes the symmetry of Arabidopsis root vascular tissue

Compressive stress, oriented by cytokinin-regulated patterned proliferation, establishes the symmetry of tissue boundary in Arabidopsis root vascular tissue.

Compressive stress shapes the symmetry of Arabidopsis root vascular tissue
2023-03-16
(Press-News.org)

Ikoma, Japan – The generation and maintenance of tissue boundaries are fundamental to the development of functional organs in both plants and animals. In general, tissue boundaries are initially set among primordial cells, and their shapes and arrangements are refined during subsequent organ growth. In this process, cell migration plays a curtail role for boundary refinement in animal systems, however, plant tissue lacks such cell fluidity due to its cell walls. Despite significant progress in understanding the initial patterning of tissue boundaries in several plant organogenesis, whether and how boundary shape is regulated under the subsequent growth phase remains unknown in plants.

A research team led by Shunsuke Miyashima at the Nara Institute of Science and Technology (NAIST) has defined a mechanism for shaping the tissue boundary and refining its symmetry during Arabidopsis root vascular tissue development. “Localized proliferation regulated by the cytokinin signaling circuit is decoded into a globally oriented mechanical stress to symmetrize the plant vascular tissue boundary,” he says.

Using laser cell ablation and mechanical simulation, the researchers demonstrated that positionally biased cell proliferation in vascular development generates anisotropic compressive stress field, smoothing and symmetrizing the boundary between two major cell-types in plant vascular tissue, xylem and procambium. As the molecular mechanism, the researchers found that the GATA transcription factor HANABA-TARANU (HAN) forms a feed-forward regulatory loop to cytokinin response to determine the position and frequency of cell proliferation, thereby distally and symmetrically restricting the source of mechanical stress to the boundary. The spatially constrained environment of plant vascular tissue efficiently entrains stress orientation among cells to produce a tissue-wide stress field, mechanically smoothing and symmetrizing the vascular cell-type boundary.

This work reveals a mechanism for shaping tissue boundaries during Arabidopsis root vascular tissue development. Through positionally biased cell proliferation, the cytokinin-HAN signaling circuit organizes anisotropic compressive stress field, which smooths and symmetrizes the tissue boundary. This work is unique such that it demonstrates the mechanical stress regulation occurs not only at adjacent cells, but also at distal locations in the tissue patterning. Although this mechanism is currently demonstrated in plant-based systems, it is likely that this mechanism also acts in animal tissues. Hence, this work sheds new light on the cell mechanics involved in morphogenesis in all multicellular organisms.

###

Resource

Title: Patterned proliferation orients tissue-wide stress to control root vascular symmetry in Arabidopsis

Authors: Motohiro Fujiwara, Miyu Imamura, Katsuyoshi Matsushita, Pawel Roszak, Takafumi Yamashino, Yoichiroh Hosokawa, Keiji Nakajima, Koichi Fujimoto, Shunsuke Miyashima

Journal: Current Biology

Information about the Plant Developmental Signaling Laboratory can be found at the following website: https://bsw3.naist.jp/eng/courses/courses110.html

END


[Attachments] See images for this press release:
Compressive stress shapes the symmetry of Arabidopsis root vascular tissue Compressive stress shapes the symmetry of Arabidopsis root vascular tissue 2 Compressive stress shapes the symmetry of Arabidopsis root vascular tissue 3

ELSE PRESS RELEASES FROM THIS DATE:

How countries can benefit from linking data

2023-03-16
A recent study makes it clear: Countries like Sweden that can link data from different areas - such as the labor market and health care - have a decisive advantage when it comes to setting targeted actions. A research team from the Complexity Science Hub, together with scientists from Sweden, Denmark and the Netherlands, investigated the extent to which mental and somatic illnesses influence integration into the labor market and whether there is a difference here between refugee and Swedish-born young adults. "In total, we analyzed ...

Pusan National University researchers examine combined effects of two combustion technologies on the emission of coal-fired boilers

Pusan National University researchers examine combined effects of two combustion technologies on the emission of coal-fired boilers
2023-03-16
Coal-fired power plants have been in place for a long time to meet the global demands for power generation. Needless to say, there are environmental and human health concerns to be addressed on this front. While there are ongoing efforts to transition to renewable energy resources, coal-fired power plants may not become obsolete just yet. Against this backdrop, it is pertinent to explore how the efficiency of these coal-fired boilers can be improved while mitigating their harmful effects on the environment, namely greenhouse gas emissions, acid rain, and photochemical smog generation, and the human health. To this end, various ...

Bottled water masks world’s failure to supply safe water for all, can slow sustainable development: UN

Bottled water masks world’s failure to supply safe water for all, can slow sustainable development: UN
2023-03-16
The rapidly-growing bottled water industry can undermine progress towards a key sustainable development goal: safe water for all, says a new United Nations report.   Based on an analysis of literature and data from 109 countries, the report says that in just five decades bottled water has developed into “a major and essentially standalone economic sector,” experiencing 73% growth from 2010 to 2020. And sales are expected to almost double by 2030, from US$ 270 billion to $500 billion. Released ...

Quantifying the life expectancy gap for people living with sickle cell disease

2023-03-16
(WASHINGTON, March 16, 2023) – While research has long established disparities in health outcomes among individuals living with sickle cell disease (SCD), few studies have quantified these gaps. A new study published in Blood Advances finds that the average life expectancy of publicly insured patients living with SCD is roughly 52.6 years. In contrast, the CDC reports that the average life expectancy in the United States is 73.5 years for men and 79.3 years for women, demonstrating the considerable ...

Genetics as conservation tool for endangered chimpanzees

Genetics as conservation tool for endangered chimpanzees
2023-03-16
The western chimpanzees of Guinea are threatened by mining activities. Using a novel genetic approach, UZH researchers and an international team have collected information on population size and community structure of the endangered species. These data provide an important baseline to assess the impact of mining. The western chimpanzee is listed as “Critically Endangered” on the Red List of the International Union for the Conservation of Nature. The Mount Nimba Strict Nature Reserve, a UNESCO World Heritage site, located on the borders of Guinea, Liberia and Côte ...

CityU scientists develop energy-saving, tunable meta-devices for high-precision, secure 6G communications

CityU scientists develop energy-saving, tunable meta-devices for high-precision, secure 6G communications
2023-03-16
The future of wireless communications is set to take a giant leap with the advent of sixth-generation (6G) wireless technology. A research team at City University of Hong Kong (CityU) invented a groundbreaking tunable terahertz (THz) meta-device that can control the radiation direction and coverage area of THz beams. By rotating its metasurface, the device can promptly direct the 6G signal only to a designated recipient, minimizing power leakage and enhancing privacy. It is expected to provide a highly adjustable, directional and secure means for future 6G communications systems. The potential of THz band technology ...

Ochsner Health advances precision medicine, becomes national leader in universal genomic testing for chemotherapy

2023-03-16
New Orleans, Louisiana – Ochsner Health is leading the way for precision medicine nationwide by becoming one of the first hospital systems to standardize genomic testing, significantly advancing ways in which care teams can treat cancer patients. This change helps providers determine individualized treatment by understanding how patients will react to certain drugs, thereby lowering risk of adverse side effects, improving patient experience, and bettering patient outcomes. Pharmacogenomics, or PGx, testing guides physicians how patients metabolize certain drugs and warns of possible side effects so they may ...

Bigger flowers, greater rewards: Plants adapt to climate disruptions to lure pollinators

2023-03-16
  Photos There's been a well-documented shift toward earlier springtime flowering in many plants as the world warms. The trend alarms biologists because it has the potential to disrupt carefully choreographed interactions between plants and the creatures—butterflies, bees, birds, bats and others—that pollinate them.   But much less attention has been paid to changes in other floral traits, such as flower size, that can also affect plant-pollinator interactions, at a time when many insect pollinators are in global decline.   In ...

Novel disease models for multiple myeloma

Novel disease models for multiple myeloma
2023-03-16
B lymphocytes – also known simply as B cells – play a central role in the immune system. If pathogens enter the body, B cells are activated and develop into plasma cells, which then release antibodies. One important step in this process is the germinal center reaction. If the B cells’ maturation into plasma cells is disrupted, multiple myeloma can develop – one of the most common blood cancers. This disease has a variety of subtypes and is not yet curable. Multiple myelomas develop very slowly and in several stages. The process is initiated by spontaneous genetic aberrations that occur ...

Scientists identify 100 important questions facing plant science

Scientists identify 100 important questions facing plant science
2023-03-16
What are the key research priorities that will help tackle the global challenges of climate change, the biodiversity crises and feed a growing population in a sustainable way? Ten years after these priorities were first debated and summarised by a panel of scientists and published in New Phytologist, the panel reflects on the changes to plant science and the progress made to address these research areas, published on 16 March in a Letter in New Phytologist. To re-evaluate research priorities, a new panel was formed in 2022 to provide an international perspective on the important areas for plant science research. This project, ...

LAST 30 PRESS RELEASES:

From blood sugar to brain relief: GLP-1 therapy slashes migraine frequency

Variability in heart rate during sleep may reveal early signs of stroke, depression or cognitive dysfunction, new study shows

New method to study catalysts could lead to better batteries

Current Molecular Pharmacology impact factor rises to 2.9, achieving Q2 ranking in the Pharmacology & Pharmacy category in 2024 JCR

More time with loved ones for cancer patients spared radiation treatment

New methods speed diagnosis of rare genetic disease

Genetics of cardiomyopathy risk in cancer survivors differ by age of onset

Autism inpatient collection releases genetic, phenotypic data for more than 1,500 children with autism

Targeting fusion protein’s role in childhood leukemia produces striking results

Clear understanding of social connections propels strivers up the social ladder

New research reveals why acute and chronic pain are so different – and what might make pain last

Stable cooling fostered life, rapid warming brought death: scientists use high-resolution fusuline data reveal evolutionary responses to cooling and warming

New research casts doubt on ancient drying of northern Africa’s climate

Study identifies umbilical cord blood biomarkers of early onset sepsis in preterm newborns

AI development: seeking consistency in logical structures

Want better sleep for your tween? Start with their screens

Cancer burden in neighborhoods with greater racial diversity and environmental burden

Alzheimer disease in breast cancer survivors

New method revolutionizes beta-blocker production process

Mechanism behind life-threatening cancer drug side-effect revealed

Weighted vests might help older adults meet weight loss goals, but solution for corresponding bone loss still elusive

Scientists find new way to predict how bowel cancer drugs will stop working – paving the way for smarter treatments

Breast cancer patients’ microbiome may hold key to avoiding damaging heart side-effects of cancer therapies

Exercise-induced protein revives aging muscles and bones

American College of Cardiology issues guidance on weight management drugs

Understanding the effect of bedding on thermal insulation during sleep

Cosmic signal from the very early universe will help astronomers detect the first stars

With AI, researchers find increasing immune evasion in H5N1

Study finds hidden effects of wildfires on water systems

Airborne fungal spores may help predict COVID-19 & flu surges

[Press-News.org] Compressive stress shapes the symmetry of Arabidopsis root vascular tissue
Compressive stress, oriented by cytokinin-regulated patterned proliferation, establishes the symmetry of tissue boundary in Arabidopsis root vascular tissue.