Impacts of priming on seed germination and seedling emergence of<i> Cleistogenes songorica</i> under drought stress

Tao, Qibo; Lv, Yunyun; Mo, Qing; Bai, Mengjie; Yun-hua, Han; Wang, Yanrong

doi:10.15258/sst.2018.46.2.06

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…Root tips were excised and treated using routine methods (Yang et al ., 2017) for chromosome counting. Flow cytometry (Dolezel and Bartos, 2005; Tao et al ., 2018) was used to estimate genome size. The clean reads (61.98 Gb) from the Illumina library were used to estimate the genome size using k‐mer analysis by Jellyfish (Marçais and Kingsford, 2011).…”

Section: Methodsmentioning

confidence: 99%

The genome of Cleistogenes songorica provides a blueprint for functional dissection of dimorphic flower differentiation and drought adaptability

Zhang

et al. 2020

Plant Biotechnology Journal

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Summary Cleistogenes songorica (2n = 4x = 40) is a desert grass with a unique dimorphic flowering mechanism and an ability to survive extreme drought. Little is known about the genetics underlying drought tolerance and its reproductive adaptability. Here, we sequenced and assembled a high‐quality chromosome‐level C. songorica genome (contig N50 = 21.28 Mb). Complete assemblies of all telomeres, and of ten chromosomes were derived. C. songorica underwent a recent tetraploidization (~19 million years ago) and four major chromosomal rearrangements. Expanded genes were significantly enriched in fatty acid elongation, phenylpropanoid biosynthesis, starch and sucrose metabolism, and circadian rhythm pathways. By comparative transcriptomic analysis we found that conserved drought tolerance related genes were expanded. Transcription of CsMYB genes was associated with differential development of chasmogamous and cleistogamous flowers, as well as drought tolerance. Furthermore, we found that regulation modules encompassing miRNA, transcription factors and target genes are involved in dimorphic flower development, validated by overexpression of CsAP2_9 and its targeted miR172 in rice. Our findings enable further understanding of the mechanisms of drought tolerance and flowering in C. songorica, and provide new insights into the adaptability of native grass species in evolution, along with potential resources for trait improvement in agronomically important species.

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Section: Methodsmentioning

confidence: 99%

The genome of Cleistogenes songorica provides a blueprint for functional dissection of dimorphic flower differentiation and drought adaptability

Zhang

et al. 2020

Plant Biotechnology Journal

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“…Hasil tersebut menunjukkan bahwa osmopriming dengan PEG 15% meningkatkan secara signifikan panjang akar, bobot kering akar, dan bobot kering tajuk pada cekaman kekeringan. Hasil tersebut sebagaimana penelitian Tao et al (2018) yang memberikan perlakuan osmopriming dengan PEG 6000 (-0.3MPa) pada biji Cleistogenes songorica memperlihatkan adanya peningkatan panjang akar yang signifikan dibandingkan dengan kontrol (tanpa perlakuan) dan PEG 15% dapat meningkatkan bobot kering tajuk dan bobot kering akar pada biji jagung (Tian et al, 2014). Osmopriming juga dapat meningkatkan panjang akar dan kapasitas akar untuk berproliferasi pada kondisi stres kekeringan dibandingkan dengan kontrol pada biji jagung (Khan et al, 2015) dan biji barley (Amini, 2013) serta , 2013) serta serta meningkatkan secara signifikan panjang akar dan bobot kering semaian dibandingkan dengan kontrol pada biji Vicia villosa (Kalsa dan Abebie, 2012), biji padi (Hussain et al, 2017), dan biji jagung (Khan et al, 2017).…”

Section: Pertumbuhan Dan Morfofisiologi Tanamanunclassified

Pengaruh Osmopriming Benih terhadap Pertumbuhan dan Morfofisiologi Tanaman Kangkung Darat (Ipomoea reptans Poir) pada Cekaman Kekeringanngkung Darat (Ipomoea reptans Poir) pada Kondisi Kekeringan

Latifa¹,

Rachmawati

2020

J. Agron. Indonesia

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Cekaman kekeringan merupakan salah satu faktor penghambat dalam budidaya tanaman kangkung darat (Ipomoea reptans Poir). Salah satu solusi dalam mengatasi masalah tersebut adalah melalui teknik osmopriming benih. Penelitian ini bertujuan untuk mengetahui pengaruh osmopriming benih terhadap pertumbuhan dan morfofisiologi tanaman kangkung darat pada cekaman kekeringan. Penelitian dilaksanakan pada bulan September 2015 sampai April 2016 di Laboratorium Fisiologi Tumbuhan dan FALITMA, UGM, Yogyakarta. Penelitian ini menggunakan rancangan acak kelompok (RAK) dengan dua faktor perlakuan yaitu osmopriming benih (0%, 5%, 10%, dan 15% (w/v) PEG 6000) dan cekaman kekeringan (interval penyiraman 1, 3, dan 5 hari sekali). Peubah yang diamati adalah persentase berkecambah, kecepatan berkecambah, keserempakan berkecambah, panjang akar, bobot kering akar, bobot kering tajuk, kadar klorofil, serta kadar prolin. Analisis statistik meliputi sidik ragam dan dilanjutkan dengan uji jarak berganda duncan (DMRT) pada taraf kepercayaan 95%. Hasil menunjukkan bahwa osmopriming meningkatkan secara signifikan persentase berkecambah, kecepatan berkecambah, keserempakan berkecambah, panjang akar, bobot kering akar, bobot kering tajuk, dan kadar prolin dengan konsentrasi PEG 15%, serta meningkatkan secara signifikan kadar klorofil dengan konsentrasi PEG 10% pada cekaman kekeringan. Osmopriming benih efektif digunakan untuk mengatasi masalah cekaman kekeringan pada budidaya tanaman kangkung darat (Ipomoea reptans Poir). Kata kunci: interval penyiraman, panjang akar, PEG 6000, persentase berkecambah

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“…Hydroprimed cotton seeds ( Gossypium hirsutum L.) obtained better germination parameters, growth and higher yield under water shortage conditions (Nasir et al 2019 ). In the grass Cleistogenes songorica native to northern China, hydropriming treatments alleviated the detrimental effects of drought stress by decreasing lipid peroxidation and ROS accumulation, and increasing activities of antioxidant enzymes (Tao et al 2018 ).…”

Section: Priming Of Seedsmentioning

confidence: 99%

Stress memory responses and seed priming correlate with drought tolerance in plants: an overview

Liu

Quan

Bartels

2022

Planta

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Main conclusion Environmental-friendly techniques based on plant stress memory, cross-stress tolerance, and seed priming help sustainable agriculture by mitigating negative effects of dehydration stress. Abstract The frequently uneven rainfall distribution caused by global warming will lead to more irregular and multiple abiotic stresses, such as heat stress, dehydration stress, cold stress or the combination of these stresses. Dehydration stress is one of the major environmental factors affecting the survival rate and productivity of plants. Hence, there is an urgent need to develop improved resilient varieties. Presently, technologies based on plant stress memory, cross-stress tolerance and priming of seeds represent fruitful and promising areas of future research and applied agricultural science. In this review, we will provide an overview of plant drought stress memory from physiological, biochemical, molecular and epigenetic perspectives. Drought priming-induced cross-stress tolerance to cold and heat stress will be discussed and the application of seed priming will be illustrated for different species.

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Impacts of priming on seed germination and seedling emergence of Cleistogenes songorica under drought stress

Cited by 12 publications

References 10 publications

The genome of Cleistogenes songorica provides a blueprint for functional dissection of dimorphic flower differentiation and drought adaptability

The genome of Cleistogenes songorica provides a blueprint for functional dissection of dimorphic flower differentiation and drought adaptability

Pengaruh Osmopriming Benih terhadap Pertumbuhan dan Morfofisiologi Tanaman Kangkung Darat (Ipomoea reptans Poir) pada Cekaman Kekeringanngkung Darat (Ipomoea reptans Poir) pada Kondisi Kekeringan

Stress memory responses and seed priming correlate with drought tolerance in plants: an overview

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