Phosphorous Supplementation Alleviates Drought-Induced Physio-Biochemical Damages in Calligonum mongolicum

被引：11

作者：

Ullah, Abd ^{[1
,2
,3
,4
]}

Tariq, Akash ^{[1
,2
,3
,4
,5
,6
]}

Zeng, Fanjiang ^{[1
,2
,3
,4
]}

Sardans, Jordi ^{[5
,6
]}

Graciano, Corina ^{[7
]}

Ullah, Sami ^{[8
]}

Chai, Xutian ^{[1
,2
,3
,4
]}

Zhang, Zhihao ^{[1
,2
,3
,4
]}

Keyimu, Maierdang ^{[1
,2
,3
,4
]}

Asghar, Muhammad Ahsan ^{[9
]}

Javed, Hafiz Hassan ^{[10
]}

Penuelas, Josep ^{[5
,6
]}

机构：

[1] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Desert Plant Roots Ecol & Vegetat Re, Urumqi 830000, Peoples R China

[2] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830000, Peoples R China

[3] Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China

[4] Univ Chinese Acad Sci, Beijing 100045, Peoples R China

[5] CREAF CSIC UAB, Global Ecol Unit, CSIC, Barcelona 08193, Catalonia, Spain

[6] CREAF, Cerdanyola Del Valles 08193, Catalonia, Spain

[7] Univ Nacl La Plata, Consejo Nacl Invest Cient & Tecn, Inst Fisiol Vegetal, B1406, Buenos Aires, DF, Argentina

[8] Univ Peshawar, Dept Bot, Peshawar 25000, Pakistan

[9] ELKH, Agr Inst, Dept Biol Resources, Ctr Agr Res, H-2462 Martonvasar, Hungary

[10] Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China

来源：

PLANTS-BASEL | 2022年 / 11卷 / 22期

基金：

中国国家自然科学基金;

关键词：

hyper-aridity; drought; antioxidant mechanism; N metabolism; P fertilization; xerophytes; WATER-USE EFFICIENCY; NITROGEN-METABOLISM; STRESS TOLERANCE; LEAF; PHOTOSYNTHESIS; GROWTH; CARBON; MECHANISMS; NUTRITION; RESPONSES;

D O I：

10.3390/plants11223054

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Calligonum mongolicum is a phreatophyte playing an important role in sand dune fixation, but little is known about its responses to drought and P fertilization. In the present study, we performed a pot experiment to investigate the effects of P fertilization under drought or well-watered conditions on multiple morpho-physio-biochemical attributes of C. mongolicum seedlings. Drought stress leads to a higher production of hydrogen peroxide (H2O2) and malondialdehyde (MDA), leading to impaired growth and metabolism. However, C. mongolicum exhibited effective drought tolerance strategies, including a higher accumulation of soluble sugars, starch, soluble protein, proline, and significantly higheractivities of peroxidase (POD) and catalase (CAT) enzymes. P fertilization increased the productivity of drought-stressed seedlings by increasing their growth, assimilative shoots relative water content, photosynthetic pigments, osmolytes accumulation, mineral nutrition, N assimilation, and reduced lipid peroxidation. Our findings suggest the presence of soil high P depletion and C. mongolicum high P requirements during the initial growth stage. Thus, P can be utilized as a fertilizer to enhance the growth and productivity of Calligonum vegetation and to reduce the fragility of the hyper-arid desert of Taklamakan in the context of future climate change.

引用

页数：21