Metabolic Responses to Environmental Stresses in Plants

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Biotic and Abiotic Stress".

Deadline for manuscript submissions: closed (10 June 2022) | Viewed by 5487

Special Issue Editor


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Guest Editor
Texas A&M Agri Life Research, Department of Horticultural Sciences, Texas A&M University, Uvalde, TX 78801, USA
Interests: plant systems physiology; metabolism; nutrient use efficiency
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Special Issue Information

Dear Colleagues,

The proposed Special Issue on “Metabolic Responses to Environmental Stresses in Plants” will present the current research findings, techniques, and novel approaches used to understand environmental stresses in plants using metabolic responses. Metabolomics has emerged as an integral part of the systems biology approach and other -omics platforms to explore different aspects of the molecular and physiological changes caused by environmental stresses in plants. There is limited knowledge on the system-level differences among the metabolites induced in response to stresses such as temperature, water, salt, heavy metals, or a combination of multiple stresses. Recent advances in analytical and -omics technologies have allowed the rapid simultaneous detection of thousands of metabolites and exploring the underlying stress-induced molecular pathways. We welcome studies that use cutting-edge tools to better understand stress-induced responses using the classic metabolite signatures such as proline, branched-chain amino acids, γ-amino butyrate, polyamines, or sugars under stress conditions. We are also inviting you to share studies that expand our understanding of stress-induced metabolites by exploring the species-level responses, natural genetic variation, specific production practices, synergistic/antagonistic effects during multiple stresses and developmental changes. We look forward to receiving your manuscripts in this Special Issue.

Dr. Vijay Joshi
Guest Editor

Manuscript Submission Information

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Keywords

  • metabolites
  • amino acids
  • sugars
  • polyamines
  • natural variation
  • heat
  • cold
  • drought

Published Papers (2 papers)

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Research

13 pages, 3142 KiB  
Article
Genome-Wide Identification of Strawberry Metal Tolerance Proteins and Their Expression under Cadmium Toxicity
by Muhammad Salman Haider, Taha Majid Mahmood Sheikh, Songtao Jiu, Muqaddas Aleem, Waqar Shafqat, Komal Shoukat, Nadeem Khan, Muhammad Jafar Jaskani, Summar A. Naqvi, Sezai Ercisli, Amine Assouguem, Mohammed Kara, Riaz Ullah, Maha Aljabri and Sameer H. Qari
Horticulturae 2022, 8(6), 477; https://doi.org/10.3390/horticulturae8060477 - 27 May 2022
Cited by 3 | Viewed by 2485
Abstract
Metal tolerance proteins (MTPs) are divalent cation transporters, known to upkeep the mineral nutrition of plants and heavy metal transport at cell, tissue, or whole plant levels. However, information related to evolutionary relationships and biological functions of MTP genes in strawberry (Fragaria [...] Read more.
Metal tolerance proteins (MTPs) are divalent cation transporters, known to upkeep the mineral nutrition of plants and heavy metal transport at cell, tissue, or whole plant levels. However, information related to evolutionary relationships and biological functions of MTP genes in strawberry (Fragaria vesca L.) remain elusive. Herein, we identified 12 MTP genes from the strawberry genome and divided them into three main groups (i.e., Zn-MTP, Fe/Zn MTP, and Mn-MTP), which is similar to MTP grouping in Arabidopsis and rice. The strawberry MTPs (FvMTPs) are predicted to be localized in the vacuole, while open reading frame (ORF) length ranged from 1113 to 2589 bp with 370 to 862 amino acids, and possess 4 to 6 transmembrane domains (TMDs), except for FvMTP12 that possessed 16 TMDs. All the FvMTP genes had putative cation efflux and cation diffusion facilitator domains along with a zinc dimerization (ZT-dimer) domain in Mn-MTPs. The collinear analysis suggested their conservation between strawberry and Arabidopsis MTPs. Promoter analysis also demonstrated that some of them might possibly be regulated by hormones and abiotic stress factors. Moreover, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis proposed that FvMTP genes are involved in cation transport and homeostasis. The expression analysis showed that FvMTP1, FvMTP1.1, and FvMTP4 were significantly induced in leaf samples, while FvMTP1.1 and FvMTP4 were significantly regulated in roots of cadmium (Cd)-treated strawberry plants during progressive stress duration. The findings of Cd accumulation depicted that Cd contents were significantly higher in root tissues than that of leaf tissues of strawberry. These results are indicative of their response during the specific duration in Cd detoxification, while further functional studies can accurately verify their specific role. Full article
(This article belongs to the Special Issue Metabolic Responses to Environmental Stresses in Plants)
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12 pages, 3406 KiB  
Article
Floral Nectary and Trichome Structure of Hoya cagayanensis, Hoya lacunosa, and Hoya coriacea (Apocynaceae, Marsdenieae)
by Syazwani Basir, Mohd Faiz Mat Saad, Mohamad Ruzi Abdul Rahman, Noraini Talip, Syarul Nataqain Baharum and Hamidun Bunawan
Horticulturae 2022, 8(5), 420; https://doi.org/10.3390/horticulturae8050420 - 9 May 2022
Cited by 5 | Viewed by 2443
Abstract
Hoya R.Br. is a genus of ornamental plants with an attractive flower shape and unique scents. Anatomical studies are required to understand their structure that produces, and stores, the metabolites released by plants. The present study was conducted to determine the type and [...] Read more.
Hoya R.Br. is a genus of ornamental plants with an attractive flower shape and unique scents. Anatomical studies are required to understand their structure that produces, and stores, the metabolites released by plants. The present study was conducted to determine the type and position of floral glands in three Hoya species: Hoya cagayanensis C.M Burton, Hoya lacunosa Blume, and Hoya coriacea Blume. The investigations were carried out using light microscopy (LM), scanning electron microscopy (SEM), and histochemical staining tests. Secondary nectaries were present in the corona lobe portion, while simple trichomes (unicellular) were found in the petals’ adaxial epidermis of all the studied species. Conical trichomes were found in H. cagayanensis, cylindrical trichomes in H. lacunosa, and falcate trichomes in H. coriacea. In the cells of secondary nectaries, this study revealed proteins, lipids, polysaccharides, and starch grains; however, only lipids and proteins were observed in simple trichomes. Secondary nectaries and simple trichomes were described for the first time in all the studied species, contributing new insight into Hoya’s anatomical and micromorphological floral glands. Full article
(This article belongs to the Special Issue Metabolic Responses to Environmental Stresses in Plants)
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