24-epibrassinolide increases growth, grain yield and β-ODAP production in seeds of well-watered and moderately water-stressed grass pea

Junlan Xiong, H.Y. Kong, N.A. Akram, X. Bai, M. Ashraf, R.Y. Tan, H. Zhu, Kadambot H.M. Siddique, Y.C. Xiong, Neil C. Turner

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

© 2015, Springer Science+Business Media Dordrecht. 24-epibrassinolide (EBL) is a growth regulator that promotes crop growth and yield, especially under water stress, but its effect on grass pea (Lathyrus sativus L.), a legume crop widely recognized as adapted to rainfed environments, is unknown. The aim of the present study was to investigate the effect of exogenously-applied EBL on growth, yield and accumulation of ß-N-oxalyl-L-a, ß-diaminopropionic acid (ß-ODAP)—a neurotoxin that can induce lathyrism in animals and humans—in grass pea under well-watered (WW) and water-stressed conditions. The first experiment conducted in a growth chamber showed that EBL application increased plant height and leaf area of well-watered [WW, 85 % field capacity (FC)] grass pea seedlings and in those in which the soil dried from 85 to 30 % FC. In two pot experiments conducted under a rainout shelter, three water regimes—soil water contents maintained at (1) 85 or 80 % FC, (2) 50 % FC, and (3) 35 % FC—were imposed. In the first rainout shelter experiment, root/soil drenching with EBL significantly increased aboveground dry weight (DW) and water use efficiency (WUE) compared with plants without EBL at 85 and 50 % FC, but did not significantly affect grain yield. In a second rainout shelter experiment, water treatments were imposed from the vegetative phase to maturity and EBL treatment significantly increased aboveground DW, grain yield, ß-ODAP concentration and amount, and WUE in the 80 and 50 % FC water regimes. It is concluded that exogenously-applied EBL can stimulate growth and WUE in grass pea when WW and moderately water stressed, and also stimulates ß-ODAP production such that the concentration in the grain is similar or even higher.
Original languageEnglish
Pages (from-to)217-231
Number of pages15
JournalPlant Growth Regulation
Volume78
Issue number2
DOIs
Publication statusPublished - 2016

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Lathyrus sativus
seed crop production
Peas
field capacity
Poaceae
Seeds
grain yield
Water
Growth
water use efficiency
water
concentration of production
soil drenching
Lathyrism
Soil
neurotoxins
Lathyrus
crops
water treatment
growth chambers

Cite this

Xiong, Junlan ; Kong, H.Y. ; Akram, N.A. ; Bai, X. ; Ashraf, M. ; Tan, R.Y. ; Zhu, H. ; Siddique, Kadambot H.M. ; Xiong, Y.C. ; Turner, Neil C. / 24-epibrassinolide increases growth, grain yield and β-ODAP production in seeds of well-watered and moderately water-stressed grass pea. In: Plant Growth Regulation. 2016 ; Vol. 78, No. 2. pp. 217-231.
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abstract = "{\circledC} 2015, Springer Science+Business Media Dordrecht. 24-epibrassinolide (EBL) is a growth regulator that promotes crop growth and yield, especially under water stress, but its effect on grass pea (Lathyrus sativus L.), a legume crop widely recognized as adapted to rainfed environments, is unknown. The aim of the present study was to investigate the effect of exogenously-applied EBL on growth, yield and accumulation of {\ss}-N-oxalyl-L-a, {\ss}-diaminopropionic acid ({\ss}-ODAP)—a neurotoxin that can induce lathyrism in animals and humans—in grass pea under well-watered (WW) and water-stressed conditions. The first experiment conducted in a growth chamber showed that EBL application increased plant height and leaf area of well-watered [WW, 85 {\%} field capacity (FC)] grass pea seedlings and in those in which the soil dried from 85 to 30 {\%} FC. In two pot experiments conducted under a rainout shelter, three water regimes—soil water contents maintained at (1) 85 or 80 {\%} FC, (2) 50 {\%} FC, and (3) 35 {\%} FC—were imposed. In the first rainout shelter experiment, root/soil drenching with EBL significantly increased aboveground dry weight (DW) and water use efficiency (WUE) compared with plants without EBL at 85 and 50 {\%} FC, but did not significantly affect grain yield. In a second rainout shelter experiment, water treatments were imposed from the vegetative phase to maturity and EBL treatment significantly increased aboveground DW, grain yield, {\ss}-ODAP concentration and amount, and WUE in the 80 and 50 {\%} FC water regimes. It is concluded that exogenously-applied EBL can stimulate growth and WUE in grass pea when WW and moderately water stressed, and also stimulates {\ss}-ODAP production such that the concentration in the grain is similar or even higher.",
author = "Junlan Xiong and H.Y. Kong and N.A. Akram and X. Bai and M. Ashraf and R.Y. Tan and H. Zhu and Siddique, {Kadambot H.M.} and Y.C. Xiong and Turner, {Neil C.}",
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24-epibrassinolide increases growth, grain yield and β-ODAP production in seeds of well-watered and moderately water-stressed grass pea. / Xiong, Junlan; Kong, H.Y.; Akram, N.A.; Bai, X.; Ashraf, M.; Tan, R.Y.; Zhu, H.; Siddique, Kadambot H.M.; Xiong, Y.C.; Turner, Neil C.

In: Plant Growth Regulation, Vol. 78, No. 2, 2016, p. 217-231.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 24-epibrassinolide increases growth, grain yield and β-ODAP production in seeds of well-watered and moderately water-stressed grass pea

AU - Xiong, Junlan

AU - Kong, H.Y.

AU - Akram, N.A.

AU - Bai, X.

AU - Ashraf, M.

AU - Tan, R.Y.

AU - Zhu, H.

AU - Siddique, Kadambot H.M.

AU - Xiong, Y.C.

AU - Turner, Neil C.

PY - 2016

Y1 - 2016

N2 - © 2015, Springer Science+Business Media Dordrecht. 24-epibrassinolide (EBL) is a growth regulator that promotes crop growth and yield, especially under water stress, but its effect on grass pea (Lathyrus sativus L.), a legume crop widely recognized as adapted to rainfed environments, is unknown. The aim of the present study was to investigate the effect of exogenously-applied EBL on growth, yield and accumulation of ß-N-oxalyl-L-a, ß-diaminopropionic acid (ß-ODAP)—a neurotoxin that can induce lathyrism in animals and humans—in grass pea under well-watered (WW) and water-stressed conditions. The first experiment conducted in a growth chamber showed that EBL application increased plant height and leaf area of well-watered [WW, 85 % field capacity (FC)] grass pea seedlings and in those in which the soil dried from 85 to 30 % FC. In two pot experiments conducted under a rainout shelter, three water regimes—soil water contents maintained at (1) 85 or 80 % FC, (2) 50 % FC, and (3) 35 % FC—were imposed. In the first rainout shelter experiment, root/soil drenching with EBL significantly increased aboveground dry weight (DW) and water use efficiency (WUE) compared with plants without EBL at 85 and 50 % FC, but did not significantly affect grain yield. In a second rainout shelter experiment, water treatments were imposed from the vegetative phase to maturity and EBL treatment significantly increased aboveground DW, grain yield, ß-ODAP concentration and amount, and WUE in the 80 and 50 % FC water regimes. It is concluded that exogenously-applied EBL can stimulate growth and WUE in grass pea when WW and moderately water stressed, and also stimulates ß-ODAP production such that the concentration in the grain is similar or even higher.

AB - © 2015, Springer Science+Business Media Dordrecht. 24-epibrassinolide (EBL) is a growth regulator that promotes crop growth and yield, especially under water stress, but its effect on grass pea (Lathyrus sativus L.), a legume crop widely recognized as adapted to rainfed environments, is unknown. The aim of the present study was to investigate the effect of exogenously-applied EBL on growth, yield and accumulation of ß-N-oxalyl-L-a, ß-diaminopropionic acid (ß-ODAP)—a neurotoxin that can induce lathyrism in animals and humans—in grass pea under well-watered (WW) and water-stressed conditions. The first experiment conducted in a growth chamber showed that EBL application increased plant height and leaf area of well-watered [WW, 85 % field capacity (FC)] grass pea seedlings and in those in which the soil dried from 85 to 30 % FC. In two pot experiments conducted under a rainout shelter, three water regimes—soil water contents maintained at (1) 85 or 80 % FC, (2) 50 % FC, and (3) 35 % FC—were imposed. In the first rainout shelter experiment, root/soil drenching with EBL significantly increased aboveground dry weight (DW) and water use efficiency (WUE) compared with plants without EBL at 85 and 50 % FC, but did not significantly affect grain yield. In a second rainout shelter experiment, water treatments were imposed from the vegetative phase to maturity and EBL treatment significantly increased aboveground DW, grain yield, ß-ODAP concentration and amount, and WUE in the 80 and 50 % FC water regimes. It is concluded that exogenously-applied EBL can stimulate growth and WUE in grass pea when WW and moderately water stressed, and also stimulates ß-ODAP production such that the concentration in the grain is similar or even higher.

U2 - 10.1007/s10725-015-0087-1

DO - 10.1007/s10725-015-0087-1

M3 - Article

VL - 78

SP - 217

EP - 231

JO - Plant Growth Regulation

JF - Plant Growth Regulation

SN - 0167-6903

IS - 2

ER -