Tall fescue germplasm response to freezing temperatures

Interrante, Sindy M.; Stein, Jimmy D.; Trammell, Michael; Webb, Stephen L.; Butler, Twain J.

doi:10.1002/ael2.20017

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…One of the most important factors that affected the growth and geographical distribution of plant species (crops and weeds) and crop‐weed interference is freezing stress. Plant tolerance to freezing stress is considered a factor determining their success after winter (Interrante et al, 2020; Nabati et al, 2021). On the other hand, examining the ability of weeds to compete with crops after the recovery period and adopting appropriate management methods to control them is considered one of the new strategies in weed control in autumn crops.…”

Section: Introductionmentioning

confidence: 99%

Freezing stress induces changes in the morphophysiological of chickpea and wild mustard seedlings

et al. 2022

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Wild mustard is one of the common and troublesome winter weeds of chickpea fields and a great competitor to reduce the chickpea productivity. Plant species (chickpeas cv. Saral and wild mustard) were compared at freezing temperatures (+4 as a control, 0, À4, À8, À12, À16, and À20 C) based on the morphophysiological traits and their recovery ability. Chickpea chlorophyll fluorescence was more sensitive to low temperatures than wild mustard. Chickpea and wild mustard F v 0 /F m 0 (light-adapted maximum efficiency of photosystem II [PSII] photochemistry) decrease 33% and 11% exposed to À16 C, respectively, compared with +4 C. Particularly at lower temperatures, wild mustard electrolyte leakage was smaller than that of chickpea; the temperature drop had a greater impact on the stems than the leaves. Per temperature degree drop from À12 to À20 C, the survival probability decreased by 12.5%.Wild mustard had a greater root dry matter (RDM) compared with chickpea plants.50% dry matter depression temperature (RDMT 50 ) could better distinguish among the species freezing response; wild mustard RDMT 50 was $1 C higher than chickpea.Plant survival and F v 0 /F m 0 correlation suggested the reliability of chlorophyll fluorescence measurements to assay plants freezing tolerance. The important contribution of a more powerful root system to wild mustard survival under adverse circumstances may be suggested by the positive association between plant survival and RDM. Higher tolerance of wild mustard to freezing stress ultimately leads to greater survival, regeneration, continued growth, and geographical distribution. Therefore, the wild mustard invasion will be possible in chickpea fields after freezing stress, especially in the cold climates and high-altitude regions.

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Section: Introductionmentioning

confidence: 99%

Freezing stress induces changes in the morphophysiological of chickpea and wild mustard seedlings

et al. 2022

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“…Tall fescue can grow in a wide range of temperatures between 4 and 35°C with an optimum 20–25°C for higher biomass production ( Rogers and Locke, 2013 ). It can tolerate cold stress, which includes chilling (0–12°C) and/or freezing (<0°C) temperatures for a short period during fall ( Interrante et al, 2020 ). The forage production is reduced during the cold months, January and February, and growth resumes when temperature rebound to ≥12°C in spring.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome of Endophyte-Positive and Endophyte-Free Tall Fescue Under Field Stresses

Islam

Krom²,

Kwon³

et al. 2022

Front. Plant Sci.

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Tall fescue is one of the primary sources of forage for livestock. It grows well in the marginal soils of the temperate zones. It hosts a fungal endophyte (Epichloë coenophiala), which helps the plants to tolerate abiotic and biotic stresses. The genomic and transcriptomic resources of tall fescue are very limited, due to a complex genetic background and outbreeding modes of pollination. The aim of this study was to identify differentially expressed genes (DEGs) in two tissues (pseudostem and leaf blade) between novel endophyte positive (E+) and endophyte-free (E−) Texoma MaxQ II tall fescue genotypes. Samples were collected at three diurnal time points: morning (7:40–9:00 am), afternoon (1:15–2:15 pm), and evening (4:45–5:45 pm) in the field environment. By exploring the transcriptional landscape via RNA-seq, for the first time, we generated 226,054 and 224,376 transcripts from E+ and E− tall fescue, respectively through de novo assembly. The upregulated transcripts were detected fewer than the downregulated ones in both tissues (S: 803 up and 878 down; L: 783 up and 846 down) under the freezing temperatures (−3.0–0.5°C) in the morning. Gene Ontology enrichment analysis identified 3 out of top 10 significant GO terms only in the morning samples. Metabolic pathway and biosynthesis of secondary metabolite genes showed lowest number of DEGs under morning freezing stress and highest number in evening cold condition. The 1,085 DEGs were only expressed under morning stress condition and, more importantly, the eight candidate orthologous genes of rice identified under morning freezing temperatures, including orthologs of rice phytochrome A, phytochrome C, and ethylene receptor genes, might be the possible route underlying cold tolerance in tall fescue.

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Regeneration capacity after exposure to freezing in wild oat (Avena ludoviciana Durieu.) and turnipweed (Rapistrum rugosum (L.) All.) in comparison with winter wheat

Hasanfard

Rastgoo

Darbandi

et al. 2021

Environmental and Experimental Botany

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Tall fescue germplasm response to freezing temperatures

Cited by 3 publications

References 9 publications

Freezing stress induces changes in the morphophysiological of chickpea and wild mustard seedlings

Freezing stress induces changes in the morphophysiological of chickpea and wild mustard seedlings

Transcriptome of Endophyte-Positive and Endophyte-Free Tall Fescue Under Field Stresses

Regeneration capacity after exposure to freezing in wild oat (Avena ludoviciana Durieu.) and turnipweed (Rapistrum rugosum (L.) All.) in comparison with winter wheat

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