Non-invasive assessment of the physiological role of leaf aerenchyma in Hippeastrum Herb. and its relation to plant water status.

Planta

IAPN-Institute of Applied Plant Nutrition, Georg-August-University Göttingen, Carl-Sprengel-Weg 1, 37075, Göttingen, Germany.

Published: June 2022

AI Article Synopsis

Article Abstract

The leaf patch clamp pressure probe combined with gas exchange measurements provides a non-invasive approach for measuring leaf aerenchyma pressure and study its physiological role in plants. The non-invasive leaf patch clamp pressure probe (LPCP) measures the output pressure, P, in response to the pressure applied by two magnets clamped to a leaf. In many plant species, it has been observed that the diel pattern of P follows the changes in the leaf turgor pressure reversely. The genus Hippeastrum comprises 143 species and many hybrids and cultivars of high economic value within Amaryllidaceae. Their leaves are characterized by the presence of aerenchyma composed of lacunae, running throughout the leaf and composing most of the mesophyll volume. In Hippeastrum, the diel changes of the LPCP output pressure are the reverse of that observed on the air pressure in the leaf aerenchyma, P, which depends on the changes in the leaf vapor pressure occurring during photosynthesis. A theoretical model is proposed and confirmed experimentally by LPCP and gas exchange measurements. The output pressure, P, in Hippeastrum can be related to the plant water status through the gas exchange processes that occur during photosynthesis. Considering the natural habitats of Hippeastrum species, these results agree with the physiological role of leaf aerenchyma in facilitating gas transport and light scattering in leaves, thus contributing to the photosynthetic efficiency of these plants under adverse environments. A second, but supplemental, interpretation of the LPCP output pressure, P, when applied on species in which the aerenchyma constitutes most of the mesophyll volume is presented.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9232429PMC
http://dx.doi.org/10.1007/s00425-022-03930-2DOI Listing

Publication Analysis

Top Keywords

leaf aerenchyma
16
output pressure
16
physiological role
12
gas exchange
12
pressure
11
leaf
10
role leaf
8
plant water
8
water status
8
leaf patch
8

Similar Publications

Cattail (), a wetland plant, is emerging as a sustainable materials resource. While most of the species are proven to be a fiber-yielding crop, exhibits the broadest leaf size (5-30 mm), yields highest amount of fiber (≈190.9 g), and captures maximum CO (≈1270 g).

View Article and Find Full Text PDF

Understanding the possible cellular responses in plants under micro(nano)-plastic (MNPs): Balancing the structural harmony with functions.

Sci Total Environ

December 2024

Laboratory of Applied Stress Biology, Department of Botany, University of Gour Banga, Malda 732103, West Bengal, India. Electronic address:

The harmful impacts of micro(nano)-plastics (MNPs) on plants have gained significant attention in the last decades. Plants have a greater tendency to aggregate positively charged (+ve) MNPs on leaf surfaces and root tips, and it can be more challenging to enter the plant body than the negatively charged (-ve) MNPs. MNPs <20 nm can directly cross the cell wall and enter mainly via leaf stomata and root crack portion.

View Article and Find Full Text PDF

Fimbristylis complanata is an aquatic halophytic sedge that thrives in salt-affected land, marshes, and water channels. Two ecotypes (HR-Rasool headworks ECe 19.45; SH- Sahianwala 47.

View Article and Find Full Text PDF

Mutation of rice SM1 enhances solid leaf midrib formation and increases methane emissions.

Plant Sci

January 2025

Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China. Electronic address:

The leaf midrib system is essential for plant growth and development, facilitating nutrient transport, providing structural support, enabling gas exchange, and enhancing resilience to environmental stresses. However, the molecular mechanism regulating leaf midrib development is still unclear.In this study, we reported a rice solid midrib 1 (sm1) mutant, exhibiting solid leaf aerenchyma and abaxial rolling leaves due to abnormal development of parenchyma and bulliform cells.

View Article and Find Full Text PDF

The group, or sweet flag, includes important medicinal plants and is classified into three species: (diploid), (tetraploid), and (sterile triploid of hybrid origin). Members of the group are famous as components of traditional Indian medicine, and early researchers suggested the origin of the sweet flag in tropical Asia. Subsequent research led to an idea of the origin of the triploid in the Amur River basin in temperate Asia, because this was the only region where both diploids and tetraploids were known to co-occur and be capable of sexual reproduction.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!